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    <link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0D90E485D074F0443F6B5DB496F85548_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0D90E485D074F0443F6B5DB496F85548" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Hierarchy [Domain]</link:label>
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    <link:label id="lab_us-gaap_FairValueInputsLevel2Member_4978741B1AFFEDFB1D365DB496F89BDB_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_4978741B1AFFEDFB1D365DB496F89BDB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 2 [Member]</link:label>
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    <link:label id="lab_us-gaap_LetterOfCreditMember_AA3B5EC1B1BAD8443FBC5DB496FD0DA1_terseLabel_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_AA3B5EC1B1BAD8443FBC5DB496FD0DA1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of credit [Member]</link:label>
    <link:label id="lab_us-gaap_LetterOfCreditMember_AA3B5EC1B1BAD8443FBC5DB496FD0DA1_label_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_AA3B5EC1B1BAD8443FBC5DB496FD0DA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letter of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="loc_us-gaap_LetterOfCreditMember_AA3B5EC1B1BAD8443FBC5DB496FD0DA1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LetterOfCreditMember_AA3B5EC1B1BAD8443FBC5DB496FD0DA1" xlink:to="lab_us-gaap_LetterOfCreditMember_AA3B5EC1B1BAD8443FBC5DB496FD0DA1" xlink:type="arc" />
    <link:label id="lab_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84_terseLabel_en-US" xlink:label="lab_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">U.S. bank debt and receivables facility [Member]</link:label>
    <link:label id="lab_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84_label_en-US" xlink:label="lab_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">U.S. bank debt and receivables facility [Member]</link:label>
    <link:label id="lab_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84_documentation_en-US" xlink:label="lab_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars, inside the reporting entity's home country; and, collateralized debt obligation backed by, for example, but not limited to, pledge, mortgage or other lien on the entity's assets.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_USBankDebtAndReceivablesFacilityMember" xlink:label="loc_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84" xlink:to="lab_trs_USBankDebtAndReceivablesFacilityMember_436D923F867986B430785DB496FE4E84" xlink:type="arc" />
    <link:label id="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_560B6ADB3C5A773DA8235DB496FED8FA_terseLabel_en-US" xlink:label="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_560B6ADB3C5A773DA8235DB496FED8FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving credit and term loan facilities [Member]</link:label>
    <link:label id="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_560B6ADB3C5A773DA8235DB496FED8FA_label_en-US" xlink:label="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_560B6ADB3C5A773DA8235DB496FED8FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving credit and term loan facilities [Member]</link:label>
    <link:label id="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_560B6ADB3C5A773DA8235DB496FED8FA_documentation_en-US" xlink:label="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_560B6ADB3C5A773DA8235DB496FED8FA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount; as well as debt instruments with maturities ranging from five to ten years.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_RevolvingCreditAndTermLoanFacilitiesMember" xlink:label="loc_trs_RevolvingCreditAndTermLoanFacilitiesMember_560B6ADB3C5A773DA8235DB496FED8FA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_C1F6FBAE851C1BA5B6595DB496FE6024_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_C1F6FBAE851C1BA5B6595DB496FE6024" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Amount</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:label="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_C1F6FBAE851C1BA5B6595DB496FE6024" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_61A1FA0877317B308B1F5DB496FE6642_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_61A1FA0877317B308B1F5DB496FE6642" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Periodic Payment, Principal</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_61A1FA0877317B308B1F5DB496FE6642" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7055F609D57BA208B3055DB496FE3A7D" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_C5F37FDAABD1F5AF434B5DB496FFBB15" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtIssuanceCosts_ADDAE3E4902189F8DA225DB496FF8552_label_en-US" xlink:label="lab_us-gaap_DebtIssuanceCosts_ADDAE3E4902189F8DA225DB496FF8552" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Issuance Cost</link:label>
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    <link:label id="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_A7A91523301A97C0AE035DB496FFB4AA_terseLabel_en-US" xlink:label="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_A7A91523301A97C0AE035DB496FFB4AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Write off of Deferred Debt Issuance Cost</link:label>
    <link:label id="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_A7A91523301A97C0AE035DB496FFB4AA_label_en-US" xlink:label="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_A7A91523301A97C0AE035DB496FFB4AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Write off of Deferred Debt Issuance Cost</link:label>
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    <link:label id="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_C288C74E2E350D968C505DB496FF3CFD_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_C288C74E2E350D968C505DB496FF3CFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility, Capacity Available for Foreign Revolver Loans</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_C288C74E2E350D968C505DB496FF3CFD_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_C288C74E2E350D968C505DB496FF3CFD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases" xlink:label="loc_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_C288C74E2E350D968C505DB496FF3CFD" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentMaturityDate_67C252083A5AF05A437C5DB496FFAC9D_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_67C252083A5AF05A437C5DB496FFAC9D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Maturity Date</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentMaturityDate_67C252083A5AF05A437C5DB496FFAC9D_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_67C252083A5AF05A437C5DB496FFAC9D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Maturity Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_67C252083A5AF05A437C5DB496FFAC9D" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_4FCD3CE8FD3B223DFDDD5DB496FFBB7E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_AF86955615A9DBA7D5F15DB496FFD97D_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_AF86955615A9DBA7D5F15DB496FFD97D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Face Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_AF86955615A9DBA7D5F15DB496FFD97D" xlink:type="locator" />
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    <link:label id="lab_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6_terseLabel_en-US" xlink:label="lab_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Incremental debt commitments capacity</link:label>
    <link:label id="lab_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6_label_en-US" xlink:label="lab_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Incremental debt commitments capacity</link:label>
    <link:label id="lab_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6_documentation_en-US" xlink:label="lab_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Incremental debt commitments capacity.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_IncrementalDebtCommitmentsCapacity" xlink:label="loc_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6" xlink:to="lab_trs_IncrementalDebtCommitmentsCapacity_69A350FE46E2DEFE324C5DB496FFAFA6" xlink:type="arc" />
    <link:label id="lab_trs_NetLeverageRatio_A184DD8A51A577C9D23D5DB496FFC732_terseLabel_en-US" xlink:label="lab_trs_NetLeverageRatio_A184DD8A51A577C9D23D5DB496FFC732" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net leverage ratio</link:label>
    <link:label id="lab_trs_NetLeverageRatio_A184DD8A51A577C9D23D5DB496FFC732_label_en-US" xlink:label="lab_trs_NetLeverageRatio_A184DD8A51A577C9D23D5DB496FFC732" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net leverage ratio</link:label>
    <link:label id="lab_trs_NetLeverageRatio_A184DD8A51A577C9D23D5DB496FFC732_documentation_en-US" xlink:label="lab_trs_NetLeverageRatio_A184DD8A51A577C9D23D5DB496FFC732" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net leverage ratio, as defined</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_NetLeverageRatio" xlink:label="loc_trs_NetLeverageRatio_A184DD8A51A577C9D23D5DB496FFC732" xlink:type="locator" />
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    <link:label id="lab_trs_RequiredprepaymentsundertermloanAfacility_0813CF7A1C2B8EB0BAB55DB496FF7E04_terseLabel_en-US" xlink:label="lab_trs_RequiredprepaymentsundertermloanAfacility_0813CF7A1C2B8EB0BAB55DB496FF7E04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Required prepayments under term loan A facility</link:label>
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    <link:label id="lab_trs_RequiredprepaymentsundertermloanAfacility_0813CF7A1C2B8EB0BAB55DB496FF7E04_documentation_en-US" xlink:label="lab_trs_RequiredprepaymentsundertermloanAfacility_0813CF7A1C2B8EB0BAB55DB496FF7E04" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Required prepayments under term loan A facility</link:label>
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    <link:label id="lab_trs_LetterOfCreditMaximumBorrowingCapacity_70DFC2853564A7BEA6EF5DB496FF1C1C_terseLabel_en-US" xlink:label="lab_trs_LetterOfCreditMaximumBorrowingCapacity_70DFC2853564A7BEA6EF5DB496FF1C1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of Credit, Maximum Borrowing Capacity</link:label>
    <link:label id="lab_trs_LetterOfCreditMaximumBorrowingCapacity_70DFC2853564A7BEA6EF5DB496FF1C1C_label_en-US" xlink:label="lab_trs_LetterOfCreditMaximumBorrowingCapacity_70DFC2853564A7BEA6EF5DB496FF1C1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letter of Credit, Maximum Borrowing Capacity</link:label>
    <link:label id="lab_trs_LetterOfCreditMaximumBorrowingCapacity_70DFC2853564A7BEA6EF5DB496FF1C1C_documentation_en-US" xlink:label="lab_trs_LetterOfCreditMaximumBorrowingCapacity_70DFC2853564A7BEA6EF5DB496FF1C1C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum borrowing capacity under the letters of credit.</link:label>
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    <link:label id="lab_us-gaap_LineOfCredit_C6F62BF7EBC71C1450825DB496FF6A31_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_C6F62BF7EBC71C1450825DB496FF6A31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility, Amount Outstanding</link:label>
    <link:label id="lab_us-gaap_LineOfCredit_C6F62BF7EBC71C1450825DB496FF6A31_label_en-US" xlink:label="lab_us-gaap_LineOfCredit_C6F62BF7EBC71C1450825DB496FF6A31" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Line of Credit</link:label>
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    <link:label id="lab_trs_LongTermDebtFairValueOfParValue_ECFDA89D6EE4CC11C4155DB496FFFCD0_label_en-US" xlink:label="lab_trs_LongTermDebtFairValueOfParValue_ECFDA89D6EE4CC11C4155DB496FFFCD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Fair Value, % of par value</link:label>
    <link:label id="lab_trs_LongTermDebtFairValueOfParValue_ECFDA89D6EE4CC11C4155DB496FFFCD0_documentation_en-US" xlink:label="lab_trs_LongTermDebtFairValueOfParValue_ECFDA89D6EE4CC11C4155DB496FFFCD0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The fair value of long-term debt presented as a % of par value.</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_34FB7D8D85BC29664C2E7FD1C85B938A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_34FB7D8D85BC29664C2E7FD1C85B938A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_34FB7D8D85BC29664C2E7FD1C85B938A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_EFB81C5DFB04777E73707FD1C85BABAC_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_EFB81C5DFB04777E73707FD1C85BABAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Defined benefit pension and postretirement plans, net of tax</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_CC6F478BD8A0E02C8F397FD1C85B70A4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_EC3E6F90825ABFDDD45237EE0B9B6AF9_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_EC3E6F90825ABFDDD45237EE0B9B6AF9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</link:label>
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    <link:label id="lab_trs_MetricTypeAxis_A1830B6E7AE903D9C23237EE0B9BD4D6_terseLabel_en-US" xlink:label="lab_trs_MetricTypeAxis_A1830B6E7AE903D9C23237EE0B9BD4D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Metric Type [Axis]</link:label>
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    <link:label id="lab_trs_MetricTypeDomain_270BFABF244B932864EB37EE0B9BCD8B_documentation_en-US" xlink:label="lab_trs_MetricTypeDomain_270BFABF244B932864EB37EE0B9BCD8B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Type of financial metric.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_MetricTypeDomain" xlink:label="loc_trs_MetricTypeDomain_270BFABF244B932864EB37EE0B9BCD8B" xlink:type="locator" />
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    <link:label id="lab_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE_terseLabel_en-US" xlink:label="lab_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3 year cash flow metric [Member]</link:label>
    <link:label id="lab_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE_label_en-US" xlink:label="lab_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">3 year cash flow metric [Member]</link:label>
    <link:label id="lab_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE_documentation_en-US" xlink:label="lab_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial metric based on cash generation results over the performance period.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_A3YearCashFlowMetricMember" xlink:label="loc_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE" xlink:to="lab_trs_A3YearCashFlowMetricMember_2B981554B3A03CBFCE4F37EE0B9BD4AE" xlink:type="arc" />
    <link:label id="lab_trs_A3YearEpsCagrMetricMember_03411836E43F78B5B8D437EE0B9BE5B5_terseLabel_en-US" xlink:label="lab_trs_A3YearEpsCagrMetricMember_03411836E43F78B5B8D437EE0B9BE5B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3 year EPS CAGR metric [Member]</link:label>
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    <link:label id="lab_trs_A3YearEpsCagrMetricMember_03411836E43F78B5B8D437EE0B9BE5B5_documentation_en-US" xlink:label="lab_trs_A3YearEpsCagrMetricMember_03411836E43F78B5B8D437EE0B9BE5B5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial metric based on earnings per share (EPS) cumulative average growth rate ("EPS CAGR") over the performance period.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_A3YearEpsCagrMetricMember" xlink:label="loc_trs_A3YearEpsCagrMetricMember_03411836E43F78B5B8D437EE0B9BE5B5" xlink:type="locator" />
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    <link:label id="lab_trs_A20122013EpsCagrMetricMember_D9F961538A90FFC4469437EE0B9BA133_terseLabel_en-US" xlink:label="lab_trs_A20122013EpsCagrMetricMember_D9F961538A90FFC4469437EE0B9BA133" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2012 &amp; 2013 EPS CAGR metric [Member]</link:label>
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    <link:loc xlink:href="trs-20160331.xsd#trs_Plan4Member" xlink:label="loc_trs_Plan4Member_3366BDEBC64BAF07A0A537EE0B9B0746" xlink:type="locator" />
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    <link:loc xlink:href="trs-20160331.xsd#trs_Plan3Member" xlink:label="loc_trs_Plan3Member_0A692DB6A6D1BB93CC5F37EE0B9B7633" xlink:type="locator" />
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    <link:label id="lab_trs_TotalshareholderreturnmetricMember_5707E92BFABD7E4A4C694F5ABC5D47D9_label_en-US" xlink:label="lab_trs_TotalshareholderreturnmetricMember_5707E92BFABD7E4A4C694F5ABC5D47D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total shareholder return metric [Member]</link:label>
    <link:label id="lab_trs_TotalshareholderreturnmetricMember_5707E92BFABD7E4A4C694F5ABC5D47D9_documentation_en-US" xlink:label="lab_trs_TotalshareholderreturnmetricMember_5707E92BFABD7E4A4C694F5ABC5D47D9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The Company's total shareholder return (TSR) relative to the TSR of the common stock of a pre-defined industry peer-group measured over a specified period of time [Member]</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_TotalshareholderreturnmetricMember" xlink:label="loc_trs_TotalshareholderreturnmetricMember_5707E92BFABD7E4A4C694F5ABC5D47D9" xlink:type="locator" />
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    <link:label id="lab_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097_terseLabel_en-US" xlink:label="lab_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">EPS CAGR and cash generation metric [Member]</link:label>
    <link:label id="lab_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097_label_en-US" xlink:label="lab_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">EPS CAGR and cash generation metric [Member] [Member]</link:label>
    <link:label id="lab_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097_documentation_en-US" xlink:label="lab_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">EPS CAGR and cash generation metric [Member]</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_EPSCAGRandcashgenerationmetricMemberMember" xlink:label="loc_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097" xlink:to="lab_trs_EPSCAGRandcashgenerationmetricMemberMember_7DDE2A49E4B1144774F84F5ABC5D4097" xlink:type="arc" />
    <link:label id="lab_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012_terseLabel_en-US" xlink:label="lab_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 2 [Member]</link:label>
    <link:label id="lab_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012_label_en-US" xlink:label="lab_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 2 [Member]</link:label>
    <link:label id="lab_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012_documentation_en-US" xlink:label="lab_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity-based compensation arrangement plan.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_Plan2Member" xlink:label="loc_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012" xlink:to="lab_trs_Plan2Member_B798F22226A1DF181E494F5ABC64C012" xlink:type="arc" />
    <link:label id="lab_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168_terseLabel_en-US" xlink:label="lab_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 7 [Member]</link:label>
    <link:label id="lab_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168_label_en-US" xlink:label="lab_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 7 [Member]</link:label>
    <link:label id="lab_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168_documentation_en-US" xlink:label="lab_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plan 7 [Member]</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_Plan7Member" xlink:label="loc_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168" xlink:to="lab_trs_Plan7Member_8ACA732F20C3B5987DCC4F5ABC64B168" xlink:type="arc" />
    <link:label id="lab_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC_terseLabel_en-US" xlink:label="lab_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 8 [Member]</link:label>
    <link:label id="lab_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC_label_en-US" xlink:label="lab_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 8 [Member]</link:label>
    <link:label id="lab_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC_documentation_en-US" xlink:label="lab_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plan 8 [Member]</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_Plan8Member" xlink:label="loc_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC" xlink:to="lab_trs_Plan8Member_3D02873CBB6BFDBD54124F5ABC6473BC" xlink:type="arc" />
    <link:label id="lab_us-gaap_TitleOfIndividualAxis_EABA29F329D67B658D464F5ABC65F238_terseLabel_en-US" xlink:label="lab_us-gaap_TitleOfIndividualAxis_EABA29F329D67B658D464F5ABC65F238" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Title of Individual [Axis]</link:label>
    <link:label id="lab_us-gaap_TitleOfIndividualAxis_EABA29F329D67B658D464F5ABC65F238_label_en-US" xlink:label="lab_us-gaap_TitleOfIndividualAxis_EABA29F329D67B658D464F5ABC65F238" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Title of Individual [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:label="loc_us-gaap_TitleOfIndividualAxis_EABA29F329D67B658D464F5ABC65F238" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TitleOfIndividualAxis_EABA29F329D67B658D464F5ABC65F238" xlink:to="lab_us-gaap_TitleOfIndividualAxis_EABA29F329D67B658D464F5ABC65F238" xlink:type="arc" />
    <link:label id="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_75E19CAB252EE1FDE39B4F5ABC657305_terseLabel_en-US" xlink:label="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_75E19CAB252EE1FDE39B4F5ABC657305" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Title of Individual with Relationship to Entity [Domain]</link:label>
    <link:label id="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_75E19CAB252EE1FDE39B4F5ABC657305_label_en-US" xlink:label="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_75E19CAB252EE1FDE39B4F5ABC657305" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Relationship to Entity [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_75E19CAB252EE1FDE39B4F5ABC657305" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_75E19CAB252EE1FDE39B4F5ABC657305" xlink:to="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_75E19CAB252EE1FDE39B4F5ABC657305" xlink:type="arc" />
    <link:label id="lab_us-gaap_DirectorMember_ABB710172BA8362C5B6E4F5ABC65FAB2_terseLabel_en-US" xlink:label="lab_us-gaap_DirectorMember_ABB710172BA8362C5B6E4F5ABC65FAB2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-employee independent director [Member]</link:label>
    <link:label id="lab_us-gaap_DirectorMember_ABB710172BA8362C5B6E4F5ABC65FAB2_label_en-US" xlink:label="lab_us-gaap_DirectorMember_ABB710172BA8362C5B6E4F5ABC65FAB2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Director [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DirectorMember" xlink:label="loc_us-gaap_DirectorMember_ABB710172BA8362C5B6E4F5ABC65FAB2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DirectorMember_ABB710172BA8362C5B6E4F5ABC65FAB2" xlink:to="lab_us-gaap_DirectorMember_ABB710172BA8362C5B6E4F5ABC65FAB2" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_0080CC54A7773AABB79D4F5ABC65D033_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_0080CC54A7773AABB79D4F5ABC65D033" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted shares issued related to director fee deferrals</link:label>
    <link:label id="lab_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_0080CC54A7773AABB79D4F5ABC65D033_label_en-US" xlink:label="lab_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_0080CC54A7773AABB79D4F5ABC65D033" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Compensation Arrangement with Individual, Shares Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_0080CC54A7773AABB79D4F5ABC65D033" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_0080CC54A7773AABB79D4F5ABC65D033" xlink:to="lab_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_0080CC54A7773AABB79D4F5ABC65D033" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_81434A8AC6430E575CCD4F5ABC665381_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_81434A8AC6430E575CCD4F5ABC665381" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award requisite service period</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_81434A8AC6430E575CCD4F5ABC665381_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_81434A8AC6430E575CCD4F5ABC665381" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_81434A8AC6430E575CCD4F5ABC665381" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_81434A8AC6430E575CCD4F5ABC665381" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_81434A8AC6430E575CCD4F5ABC665381" xlink:type="arc" />
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93_terseLabel_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ICP, Threshold target for granting stock awards</link:label>
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93_label_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Incentive Compensation Plan, Threshold Target Award for Granting Stock Award</link:label>
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93_documentation_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Incentive Compensation Plan, Threshold Target Award for Granting Stock Award.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward" xlink:label="loc_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93" xlink:to="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_19291C869355F2E08B394F5ABC660F93" xlink:type="arc" />
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422_terseLabel_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash value of incentive plan</link:label>
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422_label_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Cash value of incentive plan</link:label>
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422_documentation_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the value of the incentive plan in earned cash.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan" xlink:label="loc_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422" xlink:to="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardCashValueOfIncentivePlan_AD4FAB700E740728CCBE4F5ABC662422" xlink:type="arc" />
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedSharesValueOfIncentivePlan_54D598A1DC963B6E77E14F5ABC666A5B_terseLabel_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedSharesValueOfIncentivePlan_54D598A1DC963B6E77E14F5ABC666A5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restriced shares value of incentive plan</link:label>
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedSharesValueOfIncentivePlan_54D598A1DC963B6E77E14F5ABC666A5B_label_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedSharesValueOfIncentivePlan_54D598A1DC963B6E77E14F5ABC666A5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Restriced shares value of incentive plan</link:label>
    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedSharesValueOfIncentivePlan_54D598A1DC963B6E77E14F5ABC666A5B_documentation_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedSharesValueOfIncentivePlan_54D598A1DC963B6E77E14F5ABC666A5B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the value of the incentive plan in restriced shares.</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_B6A37743C86125CE06A04DF3ADF6DC6F" xlink:to="lab_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_B6A37743C86125CE06A04DF3ADF6DC6F" xlink:type="arc" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_5F59789BE79CAB5258044DF3ADF68EB0_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_5F59789BE79CAB5258044DF3ADF68EB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquireProductiveAssets_4E6ECD2E9FA9797E74994DF3ADF64A67_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireProductiveAssets_4E6ECD2E9FA9797E74994DF3ADF64A67" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9A9FB943854C9125BFBC4DF3ADF6403A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_209EAC5AB9C1F07F7D724DF3ADF60DD3_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_209EAC5AB9C1F07F7D724DF3ADF60DD3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net proceeds from disposition of property and equipment</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets" xlink:label="loc_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_209EAC5AB9C1F07F7D724DF3ADF60DD3" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_54C0EA28C17531A2B48E4E0A6CD2A2FF_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_54C0EA28C17531A2B48E4E0A6CD2A2FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_54C0EA28C17531A2B48E4E0A6CD2A2FF_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_54C0EA28C17531A2B48E4E0A6CD2A2FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_54C0EA28C17531A2B48E4E0A6CD2A2FF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_7695D91DA0270D5EA74A4E0A6CD277ED_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_7695D91DA0270D5EA74A4E0A6CD277ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
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    <link:label id="lab_trs_OverdraftFacilityMember_E08FF7015C530CAB31364E0A6CD24C39_terseLabel_en-US" xlink:label="lab_trs_OverdraftFacilityMember_E08FF7015C530CAB31364E0A6CD24C39" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Overdraft Facility [Member]</link:label>
    <link:label id="lab_trs_OverdraftFacilityMember_E08FF7015C530CAB31364E0A6CD24C39_label_en-US" xlink:label="lab_trs_OverdraftFacilityMember_E08FF7015C530CAB31364E0A6CD24C39" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Overdraft Facility [Member]</link:label>
    <link:label id="lab_trs_OverdraftFacilityMember_E08FF7015C530CAB31364E0A6CD24C39_documentation_en-US" xlink:label="lab_trs_OverdraftFacilityMember_E08FF7015C530CAB31364E0A6CD24C39" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Overdraft Facility [Member]</link:label>
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    <link:label id="lab_us-gaap_SecuredDebtMember_A48EAA27CF2E483CEDAE4E0A6CD24E70_terseLabel_en-US" xlink:label="lab_us-gaap_SecuredDebtMember_A48EAA27CF2E483CEDAE4E0A6CD24E70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receivables Facility [Member]</link:label>
    <link:label id="lab_us-gaap_SecuredDebtMember_A48EAA27CF2E483CEDAE4E0A6CD24E70_label_en-US" xlink:label="lab_us-gaap_SecuredDebtMember_A48EAA27CF2E483CEDAE4E0A6CD24E70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Debt [Member]</link:label>
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    <link:label id="lab_trs_SecuredDebtMaximumBorrowingCapacity_6178F49A82FCE6EA1C1A4E0A6CD2427F_documentation_en-US" xlink:label="lab_trs_SecuredDebtMaximumBorrowingCapacity_6178F49A82FCE6EA1C1A4E0A6CD2427F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum borrowing capacity under the receivables facility debt arrangement.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_SecuredDebtMaximumBorrowingCapacity" xlink:label="loc_trs_SecuredDebtMaximumBorrowingCapacity_6178F49A82FCE6EA1C1A4E0A6CD2427F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SecuredDebt_EAA194367C553DFB3B024E0A6CD28C42_terseLabel_en-US" xlink:label="lab_us-gaap_SecuredDebt_EAA194367C553DFB3B024E0A6CD28C42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Secured Debt</link:label>
    <link:label id="lab_us-gaap_SecuredDebt_EAA194367C553DFB3B024E0A6CD28C42_label_en-US" xlink:label="lab_us-gaap_SecuredDebt_EAA194367C553DFB3B024E0A6CD28C42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SecuredDebt" xlink:label="loc_us-gaap_SecuredDebt_EAA194367C553DFB3B024E0A6CD28C42" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_D9DB3D8ED910A130E56B4E0A6CD2966E_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_D9DB3D8ED910A130E56B4E0A6CD2966E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Receivables facility debt available but not utilized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:label="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_D9DB3D8ED910A130E56B4E0A6CD2966E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_D9DB3D8ED910A130E56B4E0A6CD2966E" xlink:to="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_D9DB3D8ED910A130E56B4E0A6CD2966E" xlink:type="arc" />
    <link:label id="lab_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169_terseLabel_en-US" xlink:label="lab_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receivables facililty, debt aggregate costs</link:label>
    <link:label id="lab_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169_label_en-US" xlink:label="lab_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receivables Facililty, Debt Aggregate Costs</link:label>
    <link:label id="lab_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169_documentation_en-US" xlink:label="lab_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of the fee that accompanies borrowing money under the debt instrument.</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_ReceivablesFacililtyDebtAggregateCosts" xlink:label="loc_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169" xlink:to="lab_trs_ReceivablesFacililtyDebtAggregateCosts_DD4B1B55CF66180E8A5C4E0A6CD27169" xlink:type="arc" />
    <link:label id="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_411EB6FA3BE756AD5C8F4E0A6CE24DE1_terseLabel_en-US" xlink:label="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_411EB6FA3BE756AD5C8F4E0A6CE24DE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Fee percentage</link:label>
    <link:label id="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_411EB6FA3BE756AD5C8F4E0A6CE24DE1_label_en-US" xlink:label="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_411EB6FA3BE756AD5C8F4E0A6CE24DE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Fee percentage</link:label>
    <link:label id="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_411EB6FA3BE756AD5C8F4E0A6CE24DE1_documentation_en-US" xlink:label="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_411EB6FA3BE756AD5C8F4E0A6CE24DE1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Fee percentage</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage" xlink:label="loc_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_411EB6FA3BE756AD5C8F4E0A6CE24DE1" xlink:type="locator" />
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    <link:label id="lab_trs_AverageliquidationperiodReceivablespool_2DF7AE2D86FE3C93F0904E0A6CE25C5D_terseLabel_en-US" xlink:label="lab_trs_AverageliquidationperiodReceivablespool_2DF7AE2D86FE3C93F0904E0A6CE25C5D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average liquidation period, Receivables pool</link:label>
    <link:label id="lab_trs_AverageliquidationperiodReceivablespool_2DF7AE2D86FE3C93F0904E0A6CE25C5D_label_en-US" xlink:label="lab_trs_AverageliquidationperiodReceivablespool_2DF7AE2D86FE3C93F0904E0A6CE25C5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average liquidation period, Receivables pool</link:label>
    <link:label id="lab_trs_AverageliquidationperiodReceivablespool_2DF7AE2D86FE3C93F0904E0A6CE25C5D_documentation_en-US" xlink:label="lab_trs_AverageliquidationperiodReceivablespool_2DF7AE2D86FE3C93F0904E0A6CE25C5D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average liquidation period, Receivables pool</link:label>
    <link:loc xlink:href="trs-20160331.xsd#trs_AverageliquidationperiodReceivablespool" xlink:label="loc_trs_AverageliquidationperiodReceivablespool_2DF7AE2D86FE3C93F0904E0A6CE25C5D" xlink:type="locator" />
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    <link:label id="lab_trs_AverageDiscountRateReceivablesFacility_4DBA71705FD28A872CBF4E0A6CE2B241_terseLabel_en-US" xlink:label="lab_trs_AverageDiscountRateReceivablesFacility_4DBA71705FD28A872CBF4E0A6CE2B241" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average discount rate, Receivables facility</link:label>
    <link:label id="lab_trs_AverageDiscountRateReceivablesFacility_4DBA71705FD28A872CBF4E0A6CE2B241_label_en-US" xlink:label="lab_trs_AverageDiscountRateReceivablesFacility_4DBA71705FD28A872CBF4E0A6CE2B241" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average discount rate, Receivables facility</link:label>
    <link:label id="lab_trs_AverageDiscountRateReceivablesFacility_4DBA71705FD28A872CBF4E0A6CE2B241_documentation_en-US" xlink:label="lab_trs_AverageDiscountRateReceivablesFacility_4DBA71705FD28A872CBF4E0A6CE2B241" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The average discount rate utilized to calculate the present value of the receivables sold under the facility debt arrangement.</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D802D1C21E4DFCF1F70B37EE0E685D5D_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D802D1C21E4DFCF1F70B37EE0E685D5D" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Number of Options Outstanding, beginning balance</link:label>
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