EXHIBIT 21.1

EnergySolutions Inc.  Subsidiaries of the Registrant

The following table sets forth all subsidiaries of the Company, other than subsidiaries that, when considered in the aggregate, would
not constitute a significant subsidiary, including the percentage of issued and outstanding voting securities beneficially owned by the Company:

EnergySolutions, LLC, a Utah limited liability company


100.00
%BNG America LLC, a Delaware limited liability company


100.00
%BNG America Savannah River Corporation, a Delaware corporation


100.00
%Manufacturing Sciences Corporation, a Colorado corporation


100.00
%EnergySolutions, Spent Fuel Division, Inc., a Delaware corporation


100.00
%EnergySolutionsFuel Services, LLC, a Delaware limited liability company


100.00
%ZionSolutions, LLC, a Delaware limited liability company


100.00
%EnergySolutionsWater System, LLC, a Utah limited liability company


100.00
%Property Value Restoration, LLC, a Delaware limited liability company


100.00
%Semprasafe LLC, a Delaware limited liability company


49.00
%EnergySolutionCompany, Inc., a Delaware corporation


100.00
%EnergySolutionsDiversified Services, Inc., a Delaware corporation


100.00
%Weskem LLC, a Delaware limited liability company


27.60
%Duratek, Inc., a Delaware corporation


100.00
%EnergySolutionsServices, Inc., a Tennessee corporation


100.00
%Hittman Transport Services, Inc., a Delaware corporation


100.00
%GTSD Sub. IV, Inc., a Delaware corporation


100.00
%Chem-Nuclear Systems, L.L.C., a Delaware limited liability company


100.00
%EnergySolutionsCanada Corporation, an Ontario corporation


100.00
%Monserco Limited, an Ontario corporation


100.00
%EnergySolutionsFederal EPC, Inc., a Delaware corporation


100.00
%Vitritek Environmental, Inc., a Delaware corporation


50.00
%EnergySolutionsEU Limited, a company incorporated in England & Wales


100.00
%UK Waste Management Solutions Limited, a company incorporated in England & Wales


100.00
%Safeguard International Solutions Limited, a company incorporated in England & Wales


100.00
%EnergySolutionsEU Services Limited, a company incorporated in England & Wales


100.00
%Reactor Sites Management Company Limited, a company incorporated in England & Wales


100.00
%Magnox South Limited, a company incorporated in England and Wales


100.00
%Magnox Electric Limited, a company incorporated in England and Wales


100.00
%EnergySolutionsItalia S.r.L., a company incorporated in Italy


100.00
%Magnox Limited, a company incorporated in England and Wales


100.00
%Magnox Electric Group Pension Trustee Company Limited, a company incorporated in England and Wales


100.00
%Energy Sales and Trading Limited, a company incorporated in England and Wales


100.00
%EnergySolutionsGovernment Group, Inc., a Delaware corporation


100.00
%EnergySolutionsFederal Services of Hanford, Inc., a Delaware corporation


100.00
%Isotek Systems, LLC, a Tennessee limited liability company


45.00
%Uranium Disposition Services, LLC, a Tennessee limited liability company


26.00
%TPMCEnergySolutionsEnvironmental Services, LLC, a Texas limited liability company


49.00
%TPMCEnergySolutionsEnvironmental Services 2008, LLC, a Texas limited liability
company


49.00
%


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TPMCEnergySolutionsEnvironmental Services 2009, LLC, a Texas limited liability
company


49.00
%EnergySolutionsof Ohio, LLC, a Delaware limited liability company


100.00
%EnergySolutionsMidwest, LLC, a Delaware limited liability company


100.00
%East Tennessee Renewal Alliance, LLC, a Delaware limited liability company


65.00
%Washington River Protection Solutions LLC, a Delaware limited liability company


40.00
%Global Threat Reduction Solutions, LLC, a Texas limited liability company


49.00
%EnergySolutionsPerformance Strategies Inc., a Georgia corporation


100.00
%LATA/Parallax Portsmouth, LLC, a New Mexico limited liability company


49.00
%West Valley Environmental Services LLC, a Delaware limited liability company


10.00
%


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