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    <link:label id="lab_trs_A3YearEpsCagrMetricMember_13F5B857EA653CBEFD7DAFF2BFE4F1D9_documentation_en-US" xlink:label="lab_trs_A3YearEpsCagrMetricMember_13F5B857EA653CBEFD7DAFF2BFE4F1D9" 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-20180930.xsd#trs_A3YearEpsCagrMetricMember" xlink:label="loc_trs_A3YearEpsCagrMetricMember_13F5B857EA653CBEFD7DAFF2BFE4F1D9" xlink:type="locator" />
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    <link:label id="lab_trs_TotalshareholderreturnmetricMember_6D1D29986B7DD054F683AFF2BFE4A62D_terseLabel_en-US" xlink:label="lab_trs_TotalshareholderreturnmetricMember_6D1D29986B7DD054F683AFF2BFE4A62D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total shareholder return metric [Member]</link:label>
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    <link:label id="lab_srt_RangeAxis_15CDD31F31F82390EB0CAFF2BFE41286_terseLabel_en-US" xlink:label="lab_srt_RangeAxis_15CDD31F31F82390EB0CAFF2BFE41286" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:label id="lab_srt_RangeAxis_15CDD31F31F82390EB0CAFF2BFE41286_label_en-US" xlink:label="lab_srt_RangeAxis_15CDD31F31F82390EB0CAFF2BFE41286" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
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    <link:label id="lab_srt_RangeMember_B748AB10BB317ADFEF68AFF2BFE4207B_terseLabel_en-US" xlink:label="lab_srt_RangeMember_B748AB10BB317ADFEF68AFF2BFE4207B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
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    <link:label id="lab_srt_MaximumMember_1F434194A60F73072AC7AFF2BFF4BED1_label_en-US" xlink:label="lab_srt_MaximumMember_1F434194A60F73072AC7AFF2BFF4BED1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
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    <link:label id="lab_us-gaap_PlanNameAxis_E56DA1F3D12485DB0CC1AFF2BFF45E1B_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameAxis_E56DA1F3D12485DB0CC1AFF2BFF45E1B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
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    <link:label id="lab_trs_Plan1Member_34BBF424AF413874FEA8AFF2BFF44F40_terseLabel_en-US" xlink:label="lab_trs_Plan1Member_34BBF424AF413874FEA8AFF2BFF44F40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 1 [Member]</link:label>
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    <link:label id="lab_trs_Plan1Member_34BBF424AF413874FEA8AFF2BFF44F40_documentation_en-US" xlink:label="lab_trs_Plan1Member_34BBF424AF413874FEA8AFF2BFF44F40" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity-based compensation arrangement plan.</link:label>
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    <link:label id="lab_trs_BankdebtandreceivablesfacilityMember_677AFEA5357A5EFF6122AB6E5C334E2D_label_en-US" xlink:label="lab_trs_BankdebtandreceivablesfacilityMember_677AFEA5357A5EFF6122AB6E5C334E2D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bank debt and receivables facility [Member]</link:label>
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    <link:label id="lab_us-gaap_CreditFacilityDomain_56C1F6216E710F622B47AB6E5C3472D7_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_56C1F6216E710F622B47AB6E5C3472D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
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    <link:label id="lab_trs_TermloanAfacilityMember_C1C1440B18017547F896AB6E5C35FEA4_terseLabel_en-US" xlink:label="lab_trs_TermloanAfacilityMember_C1C1440B18017547F896AB6E5C35FEA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">term loan A facility [Member]</link:label>
    <link:label id="lab_trs_TermloanAfacilityMember_C1C1440B18017547F896AB6E5C35FEA4_label_en-US" xlink:label="lab_trs_TermloanAfacilityMember_C1C1440B18017547F896AB6E5C35FEA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">term loan A facility [Member]</link:label>
    <link:label id="lab_trs_TermloanAfacilityMember_C1C1440B18017547F896AB6E5C35FEA4_documentation_en-US" xlink:label="lab_trs_TermloanAfacilityMember_C1C1440B18017547F896AB6E5C35FEA4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">term loan A facility [Member]</link:label>
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    <link:label id="lab_us-gaap_LetterOfCreditMember_4082B0AD0F7EA91C7105AB6E5C35B1D0_terseLabel_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_4082B0AD0F7EA91C7105AB6E5C35B1D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of credit [Member]</link:label>
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    <link:label id="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_250EE6BD957E6468C657AB6E5C3DB9C7_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_250EE6BD957E6468C657AB6E5C3DB9C7" 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>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases" xlink:label="loc_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_250EE6BD957E6468C657AB6E5C3DB9C7" xlink:type="locator" />
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