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    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_843DA9BB35F6D3E7E030F3FB9925EB1D_label_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_7207D7E0AC075FB5AC6A75022677EADC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
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    <link:label id="lab_us-gaap_StatementLineItems_03497241FB2D7B8DBC49F3FB992581DC_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_C68ADD4AA8C55FC480D13954E97B5016" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
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    <link:label id="lab_us-gaap_SalesRevenueNet_4805D5AE32104CB5D1E0F3FB99251E69_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNet_77A6236035505C0CB910B6C63F797094" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Net</link:label>
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    <link:label id="lab_us-gaap_OperatingIncomeLoss_C14384CF4A65F2CEA64DF3FB9925AC6A_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_C43A092C474150F59834ABDAB6FB5E2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Income (Loss)</link:label>
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    <link:label id="lab_trs_SeniorSecuredTermLoanMember_BEB362D422930EA0609BDE2B5D949D95_label_en-US" xlink:label="lab_trs_SeniorSecuredTermLoanMember_AF97F62657135B68AB4C71026C0574A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Secured Term Loan A [Member]</link:label>
    <link:label id="lab_trs_SeniorSecuredTermLoanMember_BEB362D422930EA0609BDE2B5D949D95_documentation_en-US" xlink:label="lab_trs_SeniorSecuredTermLoanMember_AF97F62657135B68AB4C71026C0574A4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior Secured Term Loan A [Member]</link:label>
    <link:loc xlink:href="trs-20180630.xsd#trs_SeniorSecuredTermLoanMember" xlink:label="loc_trs_SeniorSecuredTermLoanMember_AF97F62657135B68AB4C71026C0574A4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentAxis_658178D03C0E00C6527ADE2B5D9401EF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_B06A1F9F91045B318258639E3A4244B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_B06A1F9F91045B318258639E3A4244B4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_4655924B6ED58ADF0B03DE2B5D94CCED_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_6B8FE912DDDF5F0CAE300A5127281640" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
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    <link:label id="lab_trs_A4.875SeniorUnsecuredNotesDue2025Member_0DF71107C511DC2172C3DE2B5D94A74A_label_en-US" xlink:label="lab_trs_A4.875SeniorUnsecuredNotesDue2025Member_DB8921EFE3E45F4A85A76D33733B075D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">4.875% Senior Unsecured Notes Due 2025 [Member]</link:label>
    <link:label id="lab_trs_A4.875SeniorUnsecuredNotesDue2025Member_0DF71107C511DC2172C3DE2B5D94A74A_documentation_en-US" xlink:label="lab_trs_A4.875SeniorUnsecuredNotesDue2025Member_DB8921EFE3E45F4A85A76D33733B075D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">4.875% Senior Unsecured Notes Due 2025 [Member]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_66B7CBC3915E5B4C98E618ECB0BDE6DD" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5DD547A3645150B18878B8FFAB1F6F37" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RangeMember_F840787D745D94AF9618DE2B5D94D74A_label_en-US" xlink:label="lab_us-gaap_RangeMember_F147F88FA02957DCAC2B7EA0722CCF12" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
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    <link:label id="lab_trs_LetterOfCreditMaximumBorrowingCapacity_E37422675C7BDC87F314D1F285F0DE34_documentation_en-US" xlink:label="lab_trs_LetterOfCreditMaximumBorrowingCapacity_E37422675C7BDC87F314D1F285F0DE34" 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_87D5C9C019A5E069F39AD1F285F08D02_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_87D5C9C019A5E069F39AD1F285F08D02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility, Amount Outstanding</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_73CE9837791DCAFD23A7D1F285F02D3C" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:label="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_B8512FC2FBAC95CD963BD1F285F04B7D" xlink:type="locator" />
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    <link:label id="lab_trs_LongTermDebtFairValueOfParValue_C12DDFAB9B08ABE29DA5D1F285F0632C_terseLabel_en-US" xlink:label="lab_trs_LongTermDebtFairValueOfParValue_C12DDFAB9B08ABE29DA5D1F285F0632C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Fair Value, % of par value</link:label>
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    <link:label id="lab_trs_LongTermDebtFairValueOfParValue_C12DDFAB9B08ABE29DA5D1F285F0632C_documentation_en-US" xlink:label="lab_trs_LongTermDebtFairValueOfParValue_C12DDFAB9B08ABE29DA5D1F285F0632C" 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_trs_A3YearEpsCagrMetricMember_572CC9472923118D6D95F71A450D258B_label_en-US" xlink:label="lab_trs_A3YearEpsCagrMetricMember_572CC9472923118D6D95F71A450D258B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">3 year EPS CAGR metric [Member]</link:label>
    <link:label id="lab_trs_A3YearEpsCagrMetricMember_572CC9472923118D6D95F71A450D258B_documentation_en-US" xlink:label="lab_trs_A3YearEpsCagrMetricMember_572CC9472923118D6D95F71A450D258B" 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-20180630.xsd#trs_A3YearEpsCagrMetricMember" xlink:label="loc_trs_A3YearEpsCagrMetricMember_572CC9472923118D6D95F71A450D258B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_A3YearEpsCagrMetricMember_572CC9472923118D6D95F71A450D258B" xlink:to="lab_trs_A3YearEpsCagrMetricMember_572CC9472923118D6D95F71A450D258B" xlink:type="arc" />
    <link:label id="lab_trs_TotalshareholderreturnmetricMember_BBE35E4C4BE9C73117DAF71A450DD890_terseLabel_en-US" xlink:label="lab_trs_TotalshareholderreturnmetricMember_BBE35E4C4BE9C73117DAF71A450DD890" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total shareholder return metric [Member]</link:label>
    <link:label id="lab_trs_TotalshareholderreturnmetricMember_BBE35E4C4BE9C73117DAF71A450DD890_label_en-US" xlink:label="lab_trs_TotalshareholderreturnmetricMember_BBE35E4C4BE9C73117DAF71A450DD890" 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_BBE35E4C4BE9C73117DAF71A450DD890_documentation_en-US" xlink:label="lab_trs_TotalshareholderreturnmetricMember_BBE35E4C4BE9C73117DAF71A450DD890" 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-20180630.xsd#trs_TotalshareholderreturnmetricMember" xlink:label="loc_trs_TotalshareholderreturnmetricMember_BBE35E4C4BE9C73117DAF71A450DD890" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_TotalshareholderreturnmetricMember_BBE35E4C4BE9C73117DAF71A450DD890" xlink:to="lab_trs_TotalshareholderreturnmetricMember_BBE35E4C4BE9C73117DAF71A450DD890" xlink:type="arc" />
    <link:label id="lab_us-gaap_PlanNameAxis_45541D3AF8E922C5F676F71A450E41F8_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameAxis_45541D3AF8E922C5F676F71A450E41F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
    <link:label id="lab_us-gaap_PlanNameAxis_45541D3AF8E922C5F676F71A450E41F8_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_45541D3AF8E922C5F676F71A450E41F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_45541D3AF8E922C5F676F71A450E41F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameAxis_45541D3AF8E922C5F676F71A450E41F8" xlink:to="lab_us-gaap_PlanNameAxis_45541D3AF8E922C5F676F71A450E41F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_PlanNameDomain_7EAC8D30D8264519C388F71A450ECB9F_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_7EAC8D30D8264519C388F71A450ECB9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:label id="lab_us-gaap_PlanNameDomain_7EAC8D30D8264519C388F71A450ECB9F_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_7EAC8D30D8264519C388F71A450ECB9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_7EAC8D30D8264519C388F71A450ECB9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameDomain_7EAC8D30D8264519C388F71A450ECB9F" xlink:to="lab_us-gaap_PlanNameDomain_7EAC8D30D8264519C388F71A450ECB9F" xlink:type="arc" />
    <link:label id="lab_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415_terseLabel_en-US" xlink:label="lab_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 1 [Member]</link:label>
    <link:label id="lab_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415_label_en-US" xlink:label="lab_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 1 [Member]</link:label>
    <link:label id="lab_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415_documentation_en-US" xlink:label="lab_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415" 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-20180630.xsd#trs_Plan1Member" xlink:label="loc_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415" xlink:to="lab_trs_Plan1Member_DE87588E1B7D96F34874F71A450FF415" xlink:type="arc" />
    <link:label id="lab_trs_Plan2Member_EADBFD11076B23A7FB24F71A450FC270_terseLabel_en-US" xlink:label="lab_trs_Plan2Member_EADBFD11076B23A7FB24F71A450FC270" 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_EADBFD11076B23A7FB24F71A450FC270_label_en-US" xlink:label="lab_trs_Plan2Member_EADBFD11076B23A7FB24F71A450FC270" 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_EADBFD11076B23A7FB24F71A450FC270_documentation_en-US" xlink:label="lab_trs_Plan2Member_EADBFD11076B23A7FB24F71A450FC270" 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-20180630.xsd#trs_Plan2Member" xlink:label="loc_trs_Plan2Member_EADBFD11076B23A7FB24F71A450FC270" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan2Member_EADBFD11076B23A7FB24F71A450FC270" xlink:to="lab_trs_Plan2Member_EADBFD11076B23A7FB24F71A450FC270" xlink:type="arc" />
    <link:label id="lab_trs_Plan3Member_A0212B8478353788AC03F71A450F1841_terseLabel_en-US" xlink:label="lab_trs_Plan3Member_A0212B8478353788AC03F71A450F1841" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 3 [Member]</link:label>
    <link:label id="lab_trs_Plan3Member_A0212B8478353788AC03F71A450F1841_label_en-US" xlink:label="lab_trs_Plan3Member_A0212B8478353788AC03F71A450F1841" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 3 [Member]</link:label>
    <link:label id="lab_trs_Plan3Member_A0212B8478353788AC03F71A450F1841_documentation_en-US" xlink:label="lab_trs_Plan3Member_A0212B8478353788AC03F71A450F1841" 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-20180630.xsd#trs_Plan3Member" xlink:label="loc_trs_Plan3Member_A0212B8478353788AC03F71A450F1841" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan3Member_A0212B8478353788AC03F71A450F1841" xlink:to="lab_trs_Plan3Member_A0212B8478353788AC03F71A450F1841" xlink:type="arc" />
    <link:label id="lab_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6_terseLabel_en-US" xlink:label="lab_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 4 [Member]</link:label>
    <link:label id="lab_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6_label_en-US" xlink:label="lab_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 4 [Member]</link:label>
    <link:label id="lab_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6_documentation_en-US" xlink:label="lab_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6" 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-20180630.xsd#trs_Plan4Member" xlink:label="loc_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6" xlink:to="lab_trs_Plan4Member_9DE8D9CDDF42F2F254D6F71A450F7BA6" xlink:type="arc" />
    <link:label id="lab_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB_terseLabel_en-US" xlink:label="lab_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 5 [Member]</link:label>
    <link:label id="lab_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB_label_en-US" xlink:label="lab_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 5 [Member]</link:label>
    <link:label id="lab_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB_documentation_en-US" xlink:label="lab_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB" 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-20180630.xsd#trs_Plan5Member" xlink:label="loc_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB" xlink:to="lab_trs_Plan5Member_2D95F5B87858AFE5D87DF71A450FEFAB" xlink:type="arc" />
    <link:label id="lab_trs_Plan7Member_FDE45187C5CD059231BDF71A4510630B_terseLabel_en-US" xlink:label="lab_trs_Plan7Member_FDE45187C5CD059231BDF71A4510630B" 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_FDE45187C5CD059231BDF71A4510630B_label_en-US" xlink:label="lab_trs_Plan7Member_FDE45187C5CD059231BDF71A4510630B" 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_FDE45187C5CD059231BDF71A4510630B_documentation_en-US" xlink:label="lab_trs_Plan7Member_FDE45187C5CD059231BDF71A4510630B" 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-20180630.xsd#trs_Plan7Member" xlink:label="loc_trs_Plan7Member_FDE45187C5CD059231BDF71A4510630B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan7Member_FDE45187C5CD059231BDF71A4510630B" xlink:to="lab_trs_Plan7Member_FDE45187C5CD059231BDF71A4510630B" xlink:type="arc" />
    <link:label id="lab_trs_Plan8Member_85D190026DF5744E0B8DF71A4510686B_terseLabel_en-US" xlink:label="lab_trs_Plan8Member_85D190026DF5744E0B8DF71A4510686B" 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_85D190026DF5744E0B8DF71A4510686B_label_en-US" xlink:label="lab_trs_Plan8Member_85D190026DF5744E0B8DF71A4510686B" 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_85D190026DF5744E0B8DF71A4510686B_documentation_en-US" xlink:label="lab_trs_Plan8Member_85D190026DF5744E0B8DF71A4510686B" 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-20180630.xsd#trs_Plan8Member" xlink:label="loc_trs_Plan8Member_85D190026DF5744E0B8DF71A4510686B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan8Member_85D190026DF5744E0B8DF71A4510686B" xlink:to="lab_trs_Plan8Member_85D190026DF5744E0B8DF71A4510686B" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_009DAF7964EFF6DF6883F71A45105B1D_verboseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_009DAF7964EFF6DF6883F71A45105B1D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restricted Stock Units [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_009DAF7964EFF6DF6883F71A45105B1D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_009DAF7964EFF6DF6883F71A45105B1D" xlink:to="lab_us-gaap_RestrictedStockUnitsRSUMember_009DAF7964EFF6DF6883F71A45105B1D" xlink:type="arc" />
    <link:label id="lab_us-gaap_TitleOfIndividualAxis_0A54327BD3572BD91A72F71A4511CEA0_terseLabel_en-US" xlink:label="lab_us-gaap_TitleOfIndividualAxis_0A54327BD3572BD91A72F71A4511CEA0" 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_0A54327BD3572BD91A72F71A4511CEA0_label_en-US" xlink:label="lab_us-gaap_TitleOfIndividualAxis_0A54327BD3572BD91A72F71A4511CEA0" 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/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:label="loc_us-gaap_TitleOfIndividualAxis_0A54327BD3572BD91A72F71A4511CEA0" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_D59D8F68FB3EBF28D335F71A4511A406" xlink:type="locator" />
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