EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
| Name | Country of Incorporation | Ownership Percentage |
| Heckett MultiServ S.A.I.C. | Argentina | 100% |
| Harsco (Australia) Pty. Limited | Australia | 100% |
| Harsco Track Technologies Pty. Ltd. | Australia | 100% |
| MultiServ Australasia Pty. Ltd. | Australia | 70% |
| MultiServ Holdings Pty. Limited | Australia | 55% |
| MultiServ NSW Pty. Limited | Australia | 55% |
| MultiServ South East Asia Pty. Ltd. | Australia | 100% |
| MultiServ Victoria Pty. Ltd. | Australia | 70% |
| SGB Australia (Pty.) Limited | Australia | 100% |
| SGB Raffia Pty. Ltd. | Australia | 100% |
| Taylor-Wharton (Australia) Pty. Limited | Australia | 100% |
| Hünnebeck Austria Schalungstechnik | Austria | 100% |
| AluServ Middle East W.L.L. | Bahrain | 65% |
| La Louviere Logistique S.A. | Belgium | 100% |
| MultiServ S.A. | Belgium | 100% |
| MultiServ Services Specialises S.A.S. | Belgium | 100% |
| SGB Belgium Sarl | Belgium | 100% |
Verwerkingsbedryf Voor Byproduckten in de Staalnyverhei | Belgium | 100% |
| Harsco (Bermuda) Limited | Bermuda | 100% |
| MultiServ Limitada | Brazil | 100% |
| Sobremetal - Recuperacao de Metais Ltda. | Brazil | 100% |
| Harsco Canada Corporation | Canada | 100% |
| Harsco Canada General Partner Limited | Canada | 100% |
| Harsco Canada Limited Partnership | Canada | 100% |
| Harsco Nova Scotia Holding Corporation | Canada | 100% |
| Guernsey Plant Hire Ltd. | Channel Islands-Guernsey | 100% |
| SGB (Channel Islands) Ltd. | Channel Islands-Jersey | 100% |
| SGB Gulf Ltd. | Channel Islands-Jersey | 100% |
| MultiServ S.A. | Chile | 100% |
MultiServ Tang Shan Iron & Steel Service Corp. Ltd. | China | 100% |
MultiServ Zhejiang Iron & Steel Service Corp. Ltd. | China | 80% |
Taylor-Wharton (Beijing) Cryogenic Equipment Co. Ltd. | China | 51% |
| Czech Slag - Nova Hut s.r.o. | Czech Republic | 65% |
| Heckett MultiServ spol. s.r.o. | Czech Republic | 100% |
| Hünnebeck Bohemia spol s.r.o. | Czech Republic | 100% |
| MultiServ Cz s.r.o. | Czech Republic | 100% |
| SGB Cz a.s. | Czech Republic | 100% |
| Hünnebeck Danmark A/S | Denmark | 100% |
| SGB Denmark ApS | Denmark | 100% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
Name | Country of Incorporation | Ownership Percentage |
Heckett Bahna Co. For Industrial Operations S.A.E. | Egypt | 65% |
| Heckett MultiServ Bahna S.A.E. | Egypt | 65% |
| SGB Egypt for Scaffolding and Formwork S.A.E. | Egypt | 96.85% |
| Slag Processing Company Egypt (SLAR) S.A.E. | Egypt | 60% |
| MultiServ Oy | Finland | 100% |
| BC Nord S.A.S. | France | 100% |
| BC S.A.S. | France | 100% |
| Becema S.A.S. | France | 100% |
| Evulca S.A.S. | France | 100% |
| Floyequip S.A. | France | 100% |
| Hünnebeck France S.A.S. | France | 100% |
| MultiServ France S.A. | France | 100% |
| MultiServ Industries S.A.S. | France | 100% |
MultiServ Logistique et Services Specialises S.A.S. | France | 100% |
| MultiServ S.A.S. | France | 100% |
| MultiServ Sud S.A. | France | 100% |
| PyroServ SARL | France | 100% |
| SCI Branchy S.A. | France | 100% |
| SGB S.A.S. | France | 100% |
| SMI Lorglev S.A.S. | France | 100% |
| Solomat Industries S.A. | France | 100% |
| Carbofer International GmbH | Germany | 100% |
| Harsco GmbH | Germany | 100% |
| Hünnebeck GmbH | Germany | 100% |
| Hünnebeck Group GmbH | Germany | 100% |
| MultiServ GmbH | Germany | 100% |
| MultiServ Guatemala S.A. | Guatemala | 100% |
| SGB Asia Pacific Ltd. | Hong Kong | 100% |
| Hünnebeck Hungaria s.r.o. | Hungary | 100% |
| SGB Eventlink (Ireland) Ltd. | Ireland | 100% |
| SGB Scafform Limited | Ireland | 100% |
| Hünnebeck Italia S.p.A. | Italy | 100% |
| IlServ SrL | Italy | 65% |
| SGB Baltics S.I.A. | Latvia | 70% |
| Luxequip Holding S.A. | Luxembourg | 100% |
| MultiServ S.A. | Luxembourg | 100% |
| SGB Asia Pacific (M) Sdn Bhd. | Malaysia | 100% |
| Taylor-Wharton Asia (M) Sdn. Bhd. | Malaysia | 100% |
| Taylor-Wharton Gas Equipment Sdn. Bhd. | Malaysia | 100% |
| Andamios Patentados, S.A. de C.V. | Mexico | 100% |
| Electroforjados Nacionales, S.A. de C.V. | Mexico | 100% |
| Irving, S.A. de C.V. | Mexico | 100% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
Name | Country of Incorporation | Ownership Percentage |
| MultiServ Metals de Mexico, S.A. de C.V. | Mexico | 100% |
| MultiServ Transport, BV | Netherlands | 100% |
| Harrie Scholten BV | Netherlands | 100% |
| Harsco Europa B.V. | Netherlands | 100% |
| Harsco Finance B.V. | Netherlands | 100% |
| Heckett MultiServ China B.V. | Netherlands | 100% |
| Heckett MultiServ Far East B.V. | Netherlands | 100% |
| Hünnebeck Nederland B.V. | Netherlands | 100% |
| MultiServ (Holland) B.V. | Netherlands | 100% |
| MultiServ Finance B.V. | Netherlands | 100% |
| MultiServ International B.V. | Netherlands | 100% |
| SGB Holland B.V. | Netherlands | 100% |
| SGB Industrial Services B.V. | Netherlands | 100% |
| SGB Logistic Services B.V. | Netherlands | 100% |
| SGB North Europe B.V. | Netherlands | 100% |
| Slag Reductie (Pacific) B.V. | Netherlands | 100% |
| Slag Reductie Nederland B.V. | Netherlands | 100% |
| Stalen Steigers Holland B.V. | Netherlands | 100% |
| SteelServ Limited | New Zealand | 50% |
| Hünnebeck Norge AS | Norway | 100% |
| MultiServ A.S. | Norway | 100% |
| MultiServ Peru SA | Peru | 100% |
| Hünnebeck Polska Sp zoo | Poland | 100% |
| SGB Polska SP Z.O.O. | Poland | 100% |
| Companhia de Tratamento de Sucatas, Limitada | Portugal | 100% |
Trenci-Engenharia Tecnicas Racuionalizades de Construcao Civil Lda. | Portugal | 100% |
| SGB Al Darwish United WLL | Qatar | 49% |
| Heckett MultiServ Saudi Arabia Limited | Saudi Arabia | 55% |
| MultiServ Smederevo D.O.O. | Serbia | 100% |
| SGB Asia Pacific (S) Pte. Ltd. | Singapore | 100% |
| MultiServ Slovensko s.r.o. | Slovak Republic | 100% |
| SGB Slovensko s.r.o. | Slovak Republic | 100% |
| Taylor-Wharton Harsco, s.r.o. | Slovak Republic | 100% |
| MultiServ South Africa (Pty.) Limited | South Africa | 100% |
| SRH Mill Services (Pty.) Ltd. | South Africa | 100% |
| SteelServ (Pty.) Ltd. | South Africa | 100% |
| Gestion Materias Ferricas, S.A. | Spain | 100% |
| MultiServ Iberica S.A. | Spain | 100% |
| MultiServ Intermetal S.A. | Spain | 100% |
| MultiServ Lycrete S.A. | Spain | 100% |
| MultiServ Reclamet, S.A. | Spain | 100% |
| Serviequipo S.A. | Spain | 100% |
| Hünnebeck Sverige A.B. | Sweden | 100% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
Name | Country of Incorporation | Ownership Percentage |
| Montanus Industriforvaltning A.B. | Sweden | 100% |
| MultiServ (Sweden) A.B. | Sweden | 100% |
| MultiServ A.B. | Sweden | 100% |
| MultiServ Nordiska A.B. | Sweden | 100% |
| SGB Stallningar A.B. | Sweden | 100% |
| MultiServ (Thailand) Company Limited | Thailand | 100% |
| Faber Prest (Overseas) Limited | U.K. | 100% |
| Faber Prest (Pacific) Limited | U.K. | 100% |
| Faber Prest Limited | U.K. | 100% |
| Fourninezero Ltd. | U.K. | 100% |
| Harsco (U.K.) Ltd. | U.K. | 100% |
| Harsco Investment Ltd. | U.K. | 100% |
| Harsco Track Technologies Ltd. | U.K. | 100% |
| Heckett International Services Limited | U.K. | 100% |
| Heckett Limited | U.K. | 100% |
| MastClimbers Ltd. | U.K. | 100% |
| MultiServ (A.S.R.) Ltd. | U.K. | 100% |
| MultiServ (Sheffield) Ltd. | U.K. | 100% |
| MultiServ (U.K.) Ltd. | U.K. | 100% |
| MultiServ Group Ltd. | U.K. | 100% |
| MultiServ Investment Limited | U.K. | 100% |
| MultiServ Logistics Limited | U.K. | 100% |
| MultiServ plc | U.K. | 100% |
| Otis Transport Services Limited | U.K. | 100% |
| Quipco Ltd. | U.K. | 100% |
| SGB (Ukraine) LLC | U.K. | 70% |
| SGB Eventlink Limited | U.K. | 100% |
| SGB Exclesio UA JV LTD | U.K. | 70% |
| SGB Group Ltd. | U.K. | 100% |
| SGB Holdings Ltd. | U.K. | 100% |
| SGB Investments Ltd. | U.K. | 100% |
| SGB Services Ltd. | U.K. | 100% |
| Short Bros (Plant) Ltd. | U.K. | 100% |
| Slag Reduction Overseas Limited | U.K. | 100% |
| Harsco Foreign Sales Corporation | U.S. Virgin Islands | 100% |
| Ashland Recovery Inc. | U.S.A. | 100% |
| Braddock Recovery Inc. | U.S.A. | 100% |
| National Recovery Systems Holding, Inc. | U.S.A. | 100% |
| ECR Inc. | U.S.A. | 100% |
| Faber Prest (U.S.), Inc. | U.S.A. | 100% |
| Great Lakes Recovery Systems Inc. | U.S.A. | 100% |
| Harsco Defense Holding, Inc. | U.S.A. | 100% |
| Harsco Minnesota Corporation | U.S.A. | 100% |
| Harsco Technologies Corporation | U.S.A. | 100% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
Name | Country of Incorporation | Ownership Percentage |
| Harsco UDLP Corporation | U.S.A. | 100% |
| Heckett Technology Services Inc. | U.S.A. | 100% |
| Maryland Slag Company | U.S.A. | 100% |
| MultiServ General Corp. | U.S.A. | 100% |
| MultiServ Inc. | U.S.A. | 100% |
| MultiServ Intermetal Inc. | U.S.A. | 100% |
| MultiServ Investment Corporation | U.S.A. | 100% |
| MultiServ Operations Ltd. | U.S.A. | 100% |
| MultiServ U.S. Corporation | U.S.A. | 100% |
| National Briquette Corporation | U.S.A. | 100% |
| National Recovery Systems Inc. | U.S.A. | 100% |
| SGB Holdings Inc. | U.S.A. | 100% |
| Slag Reduction Investment Corporation | U.S.A. | 100% |
| SRA Mill Services, Inc. | U.S.A. | 100% |
| Hünnebeck LLC | United Arab Emirates | 49% |
| Quebeisi SGB LLC | United Arab Emirates | 49% |
| Heckett MultiServ M.V. & M.S., C.A. | Venezuela | 100% |
Companies in which Harsco Corporation does not exert management control are not consolidated. These companies are listed below as unconsolidated entities.
Name | Country of Incorporation/ Organization | Ownership Percentage |
| Granufos S.A.S. | France | 50% |
| Phooltas Tamper Private Limited | India | 40% |
| p.t. Purna Baja Heckett | Indonesia | 40% |
| Salamis / SGB Limited | Scotland | 50% |