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    </IRS990>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
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      <HeldWorksArtGrp />
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      <CYMinus4YrEndwmtFundGrp />
      <LandGrp />
      <BuildingsGrp />
      <LeaseholdImprovementsGrp />
      <EquipmentGrp />
      <OtherLandBuildingsGrp />
      <FederalIncomeTaxLiabilityAmt>0</FederalIncomeTaxLiabilityAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>CASH OVERDRAFT</Desc>
        <Amt>117965</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>117965</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>38553852</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>132907</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>132907</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>38420945</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>77937</InvestmentExpensesNotIncldAmt>
      <RevenueNotReportedFinclStmtAmt>77937</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>38498882</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>33042849</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>33042849</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>77937</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>77937</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>33120786</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, SCHEDULE D, PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Plan's administrator has analyzed the tax positions taken by the Plan and has concluded that, as of September 30, 2023 and 2022, there are no uncertain positions taken, or expected to be taken, that would require recognition of a liability or disclosure in the financial statements. The Plan is subject to routine audits by the taxing jurisdictions; however, there are currently no audits for any tax periods in progress.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 3:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PLAN HAS CONTRACTED WITH CV ADMINISTRATIVE SERVICES, INC. TO PROVIDE ADMINISTRATIVE SERVICES FOR THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B:</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS REVIEWED BY THE CHAIRMAN AND Vice-CHAIRMAN PRIOR TO FILING. A COPY IS PROVIDED TO ALL TRUSTEES PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VII, SECTION A, LINE 1A:</FormAndLineReferenceDesc>
        <ExplanationTxt>TRUSTEES ARE NOT COMPENSATED BY THE TRUST. COMPENSATION PAID TO TRUSTEES EMPLOYED BY OTHER RELATED ORGANIZATIONS IS REPORTED ON THE FORM 990 FILED WITH THE INTERNAL REVENUE SERVICE BY THE RELATED TAX-EXEMPT ORGANIZATION. FOR ADDITIONAL INFORMATION, CONTACT THE TRUST FUND ADMINISTRATIVE OFFICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF TRUSTEES ASSUMES RESPONSIBILITY FOR OVERSIGHT OF THE AUDIT OF ITS FINANCIAL STATEMENTS AND SELECTION OF AN INDEPENDENT ACCOUNTANT. THE PLAN HAS MADE NO CHANGES TO THE AUDIT OVERSIGHT PROCESS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>International Brotherhood of Boilermaker</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>753 State Ave</AddressLine1Txt>
          <CityNm>Kansas City</CityNm>
          <StateAbbreviationCd>KS</StateAbbreviationCd>
          <ZIPCd>66101</ZIPCd>
        </USAddress>
        <EIN>486031851</EIN>
        <PrimaryActivitiesTxt>LABOR ORG.</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>KS</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(5)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>N/A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>na</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE R, IDENTIFICATION OF RELATED ORGANIZATIONS:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FILING ORGANIZATION IS A TAFT-HARTLEY MULTIEMPLOYER TRUST THAT PROVIDES BENEFITS TO ELIGIBLE EMPLOYERS AND THEIR DEPENDENTS. AS OF SEPTEMBER 30, 2023, THERE ARE 211 EMPLOYERS THAT CONTRIBUTE TO THE TRUST. THE FEDERAL TAX CLASSIFICATION (DISREGARDED ENTITY, TAX EXEMPT ORGANIZATION, PARTNERSHIP, TAXABLE CORPORATION OR TRUST) FOR EACH CONTRIBUTING EMPLOYER IS NOT ON FILE WITH THE ADMINISTRATIVE OFFICE AND COULD NOT BE REASONABLY OBTAINED. AS A RESULT, THE NAMES OF THE CONTRIBUTING EMPLOYERS ARE LISTED ON PART VII. A &amp; B WELDING &amp; CONSTRUCTION, INC A P &amp; F CONSTRUCTION ADAPTIVE STAINLESS AECON-WACHS TECHNICAL SERVICES LTD ALB, INC. ALBERICI CONSTRUCTORS ALLIANCE CONSTRUCTORS INC. ALLIED POWER SERVICES, LLC ALLOY CLADDING CO.,INC. AMERICAN BOILER COMPANY APCOMPOWER INC APOLLO SHEET METAL, INC. APTIM SERVICES, LLC ARB INC. ASSOCIATED TANK CONSTRUCTORS ATLANTIC PLANT MAINTENANCE ATOMIC IRON, INC. AZCO INC. AZZ WSI LLC BABCOCK &amp; WILCOX CONSTRUCTION BADGER LABOR SERVICES, LLC BARNHART CRANE AND RIGGING BAY CITY BOILER &amp; ENGINEERING CO., INC. BAY SHIPBUILDING CO. BG INDUSTRIAL SERVICES LLC BHI ENERGY BLUE PEAKS INDUSTRIAL BM LOCAL #107 DEV &amp; TRAINING FUND BM LOCAL #647 DEV &amp; TRAINING FUND BM LOCAL 549 APPRENTICESHIP &amp; TRAINING BML 83 SUPPLEMENTAL TRAINING &amp; EDUC BMWC CONSTRUCTORS BOILERMAKERS LOCAL #101 BOILERMAKERS LOCAL #107 BOILERMAKERS LOCAL #11 BOILERMAKERS LOCAL #13 BOILERMAKERS LOCAL #242 BOILERMAKERS LOCAL #27 BOILERMAKERS LOCAL #28 BOILERMAKERS LOCAL #29 BOILERMAKERS LOCAL #363 BOILERMAKERS LOCAL #4 BOILERMAKERS LOCAL #45 BOILERMAKERS LOCAL #502 BOILERMAKERS LOCAL #549 BOILERMAKERS LOCAL #627 BOILERMAKERS LOCAL #647 BOILERMAKERS LOCAL #744 BOILERMAKERS LOCAL #83 BOILERMAKERS LOCAL #92 BOILERMAKERS LOCAL 92 JATC BOLDT COMPANY BRADLEY SCIOCCHETTI, INC. BRAGG CRANE &amp; RIGGING CO. BRAND SAFWAY INDUSTRIES, LLC BRAYCO INC. BROCK INDUSTRIAL SERVICES, LLC BURNN BOILER &amp; MECHANICAL, INC. C H MURPHY/CLARK-ULLMAN, INC. CADY AQUASTORE, INC. CALIF0RNIA BOILER CBI SERVICES, LLC CENTRAL MAINTENANCE &amp; WELDING, INC. CHAMPION SPECIALTY SERVICES, LLC CHAPMAN CORPORATION CHATTANOOGA BOILER &amp; TANK CO. CHERNE CONTRACTING CORPORATION CHESTER POOL SYSTEMS INC. CONSTRUCTION &amp; TURNAROUND SERVICES CONTRACTORS CARGO COMPANY CORROSION MONITORING SERVICES CORVAL CONSTRUCTORS, INC. CR MEYER AND SONS D.D.J. CONSTRUCTION WELDING, INC. DAY &amp; ZIMMERMAN NPS, INC. DCK DEPARTMENT OF WATER &amp; POWER EARLY CONSTRUCTION, CO. ENERFAB POWER &amp; INDUSTRIAL, LLC ESW PLANT SERVICES, LLC FISHER TANK CO. FLUOR CONSTRUCTORS INTERNATIONAL, INC. FLUOR MAINTENANCE SERVICES, INC. FM SYLVAN INC. FOREST CITY ERECTORS, INC. FRANK LILL &amp; SON, INC FURINO &amp; SONS INC. FUSION BOILER WORKS, INC. GEM, INC. GLOBAL SCAFFOLD CONSTRUCTION SERVICES GRP WEGMAN GULF COAST INDUSTRIAL MAINTENANCE HARDER MECHANICAL CONTRACTORS, INC. HASKELL CORPORATION HAYES COMMERCIAL HAYES SERVICES LLC. HEAVY METAL WELDING &amp; FABRICATION LLC HELFRICH BROTHERS BOILER WORKS, INC. HENKELS &amp; MCCOY INC. HI-TECH WELD OVERLAY GROUP HOHL INDUSTRIAL SERVICES, INC. HRI INC. HUDSON BOILER AND TANK CO. ICC COMMONWEALTH CORP. ICON MECHANICAL INDUSTRIAL SERVICES, INC INSTEEL BRADFORD IPC LYDON, LLC J. GIVOO CONSULTANTS J.H. KELLY, LLC J.J. WHITE, INC. JAFFA CONSTRUCTION JAMAR COMPANY K &amp; E FABRICATING CO., INC. KELLEY STEEL ERECTORS, INC. KENNEDY TANK &amp; MFG CO. INC. KIEWIT LAKEHEAD CONSTRUCTORS, INC. LEFEVRE WELDING LINCOLN MANUFACTURING, INC. LINTEC CORPORATION LIPPERT MECHANICAL SERVICE CORP. LOCKE AMI, LLC LUCKY MECHANICAL, LLC M&amp;M WELDING &amp; FABRICATORS, INC. MADISON INDUSTRIAL SERVICES MANAFORT BROTHERS MAP MECHANICAL CONTRACTORS, INC. MATRIX NAC MC INDUSTRIAL, INC McABEE CONSTRUCTION, INC. MCCARLS INC MECHANICAL ADVANTAGE CONSTRUCTION LLC MECHANICAL TECHNOLOGIES, INC. MID MOUNTAIN BOILER &amp; STEAM, INC. MILCO NATIONAL CONSTRUCTORS, INC. MILETTA BROTHERS, INC. MILLER INDUSTRIAL SERVICE TEAMS, INC MILLER MECHANICAL SERVICES, INC. MOLLENBERG-BETZ, INC. MORRISON CONSTRUCTION MUELLER FIELD OPERATIONS INC. NAES POWER CONTRACTORS NBW, INC. NEW AGE FASTENING SYSTEMS, INC. NOOTER CONSTRUCTION COMPANY NORMINN INDUSTRIAL, LLC NORTHERN HORIZONS, INC. NORTHERN STATES POWER COMPANY OAK MOUNTAIN INDUSTRIES OCONNOR CORPORATION OMI INDUSTRIAL SERVICES LLC OPTIMUS INDUSTRIES, LLC-CHANUTE MFG. ORBIS SIBRO, INC. PACIFIC TANK &amp; CONSTRUCTION, INC. PBBS EQUIPMENT CORP-TWIN CITIES PCI ENERGY SERVICES/WESTINGHOUSE PERFORMANCE CONTRACTING, INC. PERFORMANCE MECHANICAL, INC. PETERSON SHEET METAL PIPING AND EQUIPMENT COMPANY POWER &amp; COMBUSTION INC. POWER SOURCE SERVICES POWER TECH SERVICES LLC PROJECT CONTROL SERVICES, INC. PRO-TEC INDUSTRIAL PULLMAN POWER, LLC RADOTICH, INC. RAGAN MECHANICAL, INC. RAMCON INDUSTRIES, INC. RAND CONSTRUCTION CO. RASMUSSEN MECHANICAL SERVICE RCR SERVICES, INC. RIGGERS, INC. RIGGS DISTLER &amp; COMPANY, INC. ROCKFORD CORPORATION SCANLON ASSOCIATES SCHECK MECHANICAL CORP. SCHULTZ INDUSTRIAL SERVICES SEA MACHINE MFG., LLC SGS US EAST COAST, LLC SHEARER CONSTRUCTION SIMAKAS COMPANY,INC. SONGER SERVICES, INC. SPECIALTY WELDING AND TURNAROUNDS STACK BROS MECHANICAL CONTRACTORS STAR MECHANICAL STEVENS ENGINEERS &amp; CONSTRUCTORS, INC. SULZER TOWER FIELD SERVICE CALIF., INC. T BAILEY INC. TECHNICAL ERECTORS, INC. TESAR INDUSTRIAL CONTRACTORS THE NEW GENERATION ENG. CONSTR. INC. TRI RIVERS WELDING, INC TRSC, INC. U.S. BOILER SERVICES, INC. U.S. TANK &amp; MECHANICAL SERVICES INC. UNION TANK ERECTION, INC. UNITED CONSTRUCTION CO INC. UNITED TECHNICAL SERVICES LLC UNIVERSAL PLANT SERVICES UST TESTING SERVICES, INC. W.O. GRUBB STEEL ERECTION, INC. WALASHEK INDUSTRIAL &amp; MARINE INC. WELDTECH SERVICES INC WESTERN COMBUSTION LLC WILLIAMS PLANT SERVICES, LLC WILTSIE CONSTRUCTION CO., INC. WINBCO TANK COMPANY WITHERUP CONSTRUCTION CO INC WRIGLEY MECHANICAL, INC.</ExplanationTxt>
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    </IRS990ScheduleR>
  </ReturnData>
</Return>