EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
| Name | Country of Incorporation | Ownership Percentage |
| MultiServ Argentina S.A. | 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 Raffia Pty. Ltd. | Australia | 100% |
| Hünnebeck Austria Schalungstechnik GmbH | Austria | 100% |
| AluServ Middle East W.L.L. | Bahrain | 65% |
| La Louviere Logistique S.A. | Belgium | 100% |
| MultiServ Sprl | Belgium | 100% |
| SGB Belgium NV | Belgium | 100% |
| Harsco (Bermuda) Limited | Bermuda | 100% |
| MultiServ Limitada | Brazil | 100% |
| Recmix DO Brazil SA | Brazil | 100% |
| Sobremetal - Recuperacao de Metais Ltda. | Brazil | 100% |
| 3191285 Nova Scotia Company | Canada | 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% |
| Materiaux Excell S.E.N.C. | Canada | 100% |
| Melri, Inc. | Canada | 100% |
| Recmix, Inc. | Canada | 100% |
| Guernsey Plant Hire Ltd. | Channel Islands-Guernsey | 100% |
| SGB (Channel Islands) Ltd. | Channel Islands-Jersey | 100% |
| MultiServ Chile S.A. | Chile | 100% |
| Inversiones Hünnebeck (Chile) LTDA | Chile | 100% |
| MultiServ Tang Shan Iron & Steel Service Corp. Ltd. | China | 100% |
| MultiServ Zhejiang Iron & Steel Service Corp. Ltd. | China | 80% |
| Czech Slag - Nova Hut s.r.o. | Czech Republic | 65% |
| MultiServ 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% |
| Hünnebeck SGB ApS | Denmark | 100% |
| 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 | 98.85% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
| Name | Country of Incorporation | Ownership Percentage |
| Slag Processing Company Egypt (SLAR) S.A.E. | Egypt | 60% |
| Excell Materials Finland OY | Finland | 100% |
| MultiServ Oy | Finland | 100% |
| BC Nord S.A.S. | France | 100% |
| Becema S.A.S. | France | 100% |
| Evulca S.A.S. | France | 100% |
| Excell Minerals France | France | 100% |
| Floyequip S.A. | France | 100% |
| Harsco France SAS | France | 100% |
| Hünnebeck France S.A.S. | France | 100% |
| MultiServ France S.A.S.U. | 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% |
| SGB S.A.S. | France | 100% |
| SMI Lorelev S.A.S. | France | 100% |
| Solomat Industries S.A.S.U. | France | 100% |
| Carbofer International GmbH | Germany | 100% |
| Entsorgungsdienste & Metalischiackentechnologie Deutschland GmbH | Germany | 100% |
| Harsco GmbH | Germany | 100% |
| Hünnebeck GmbH | Germany | 100% |
| SGB Cleton GmbH | Germany | 100% |
| Hünnebeck Group GmbH | Germany | 100% |
| MultiServ GmbH | Germany | 100% |
| Harsco (Gibraltar) Holding Limited | Gibraltar | 100% |
| Alexandros International Ltd | Greece | 100% |
| MultiServ Guatemala S.A. | Guatemala | 100% |
| Hünnebeck Hungaria Kft. | Hungary | 100% |
| SGB Eventlink (Ireland) Ltd. | Ireland | 100% |
| SGB Scafform Limited | Ireland | 100% |
| Hünnebeck Italia S.p.A. | Italy | 100% |
| MultiServ Italia SrL | Italy | 100% |
| IlServ SrL | Italy | 65% |
| SGB Baltics S.I.A. | Latvia | 70% |
| Harsco Luxembourg SARL | Luxembourg | 100% |
| Luxequip Holding S.A. | Luxembourg | 100% |
| MultiServ S.A. | Luxembourg | 100% |
| SGB Asia Pacific (M) Sdn Bhd. | Malaysia | 100% |
| Andamios Patentados, S.A. de C.V. | Mexico | 100% |
| Electroforjados Nacionales, S.A. de C.V. | Mexico | 100% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
| Name | Country of Incorporation | Ownership Percentage |
| Irving, S.A. de C.V. | Mexico | 100% |
| MultiServ Metals de Mexico, S.A. de C.V. | Mexico | 100% |
| MultiServ Transport, BV | Netherlands | 100% |
| Excell Materials Europe BV | Netherlands | 100% |
| Gasserv (Netherlands) I BV | Netherlands | 100% |
| Gasserv (Netherlands) II BV | Netherlands | 100% |
| Gasserv (Netherlands) VII BV | Netherlands | 100% |
| Gasserv (Netherlands) VI BV | Netherlands | 100% |
| Harsco Investments Europe BV | Netherlands | 100% |
| Harsco International Finance BV | Netherlands | 100% |
| Harrie Scholten BV | Netherlands | 100% |
| Harsco Europa B.V. | Netherlands | 100% |
| Harsco Finance B.V. | Netherlands | 100% |
| Harsco Nederland Slag BV | Netherlands | 100% |
| Harsco (Mexico) Holdings BV | Netherlands | 100% |
| Harsco (Peru) Holdings BV | Netherlands | 100% |
| Heckett MultiServ China B.V. | Netherlands | 100% |
| Heckett MultiServ Far East B.V. | Netherlands | 100% |
| MultiServ (Holland) B.V. | Netherlands | 100% |
| MultiServ Finance B.V. | Netherlands | 100% |
| MultiServ International B.V. | Netherlands | 100% |
| Oostellijk Staal International BV | Netherlands | 100% |
| SGB Holland BV | Netherlands | 100% |
| SGB Hünnebeck Formwork | Netherlands | 100% |
| SGB Industrial Services B.V. | Netherlands | 100% |
| SGB Cleton 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% |
| Patent Panama SA | Panama | 100% |
| MultiServ Peru SA | Peru | 100% |
| Alexander Mill Services International SP ZOO | Poland | 100% |
| Hünnebeck Polska Sp zoo | 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% |
| AMSI Romania SRI | Romania | 100% |
| Hünnebeck Russia | Russia | 100% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
| Name | Country of Incorporation | Ownership Percentage |
| Harsco Fairways Partnership | Scotland | 100% |
| Harsco Highlands Partnership | Scotland | 100% |
| Harsco York Place Limited | Scotland | 100% |
| 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% |
| MultiServ South Africa (Pty.) Limited | South Africa | 100% |
| MultiServ Technologies (South Africa) | South Africa | 100% |
| Recmix of South Africa (Pty) Ltd | South Africa | 100% |
| SRH Mill Services (Pty.) Ltd. | South Africa | 100% |
| SteelServ (Pty.) Ltd. | South Africa | 100% |
| Heckett MultiServ (FS) (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% |
| Excell Americas Holdings, Ltd | St. Kitts & Nevis | 100% |
| Excell Africa Holdings Ltd | St. Kitts & Nevis | 100% |
| Hünnebeck Sverige A.B. | Sweden | 100% |
| Montanus Industriforvaltning A.B. | Sweden | 100% |
| MultiServ (Sweden) A.B. | Sweden | 100% |
| MultiServ A.B. | Sweden | 100% |
| MultiServ Nordiska A.B. | Sweden | 100% |
| MultiServ Technologies (Sweden) AB | Sweden | 100% |
| MultiServ (Thailand) Company Limited | Thailand | 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 Leatherhead Limited | U.K. | 100% |
| Harsco Mole Valley Limited | U.K. | 100% |
| Harsco Track Technologies Ltd. | U.K. | 100% |
| Harsco Surrey Holdings Limited | U.K. | 100% |
| Harsco (UK) Group Ltd | U.K. | 100% |
| Harsco (UK) Holdings Ltd | U.K. | 100% |
| Heckett Limited | U.K. | 100% |
| MultiServ Holding Limited | U.K. | 100% |
| MultiServ Group Ltd. | U.K. | 100% |
| MultiServ Investment Limited | U.K. | 100% |
| MultiServ plc | U.K. | 100% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
| Name | Country of Incorporation | Ownership Percentage |
| SGB Exclesio UA JV LTD | U.K. | 71.55% |
| SGB Group Ltd. | U.K. | 100% |
| SGB Investments Ltd. | U.K. | 100% |
| SGB Middle East Limited | U.K. | 100% |
| SGB Services Ltd. | U.K. | 100% |
| Short Bros (Plant) Ltd. | U.K. | 100% |
| Slag Reduction Overseas Limited | U.K. | 100% |
| Ashland Recovery Inc. | U.S.A. | 100% |
| Braddock Recovery Inc. | U.S.A. | 100% |
| ECR Inc. | U.S.A. | 100% |
| Excell Technologies, Inc. | U.S.A. | 100% |
| Great Lakes Recovery Systems Inc. | U.S.A. | 100% |
| Harsco Defense Holding, Inc. | U.S.A. | 100% |
| Harsco Holdings, Inc. | U.S.A. | 100% |
| Harsco Minnesota Corporation | U.S.A. | 100% |
| Harsco Technologies Corporation | U.S.A. | 100% |
| MultiServ General Corp. | U.S.A. | 100% |
| MultiServ LLC | U.S.A. | 100% |
| MultiServ Intermetal LLC | U.S.A. | 100% |
| MultiServ Investment LLC | 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% |
| Recmix of KY, Inc. | U.S.A. | 100% |
| Recmix of PA, Inc. | U.S.A. | 100% |
| SGB Holdings Inc. | U.S.A. | 100% |
| Slag Reduction Investment LLC | U.S.A. | 100% |
| SGB (Ukraine) LLC | Ukraine | 100% |
| Hünnebeck Emirates LLC | United Arab Emirates | 49% |
| Quebeisi SGB LLC | United Arab Emirates | 49% |
| Hünnebeck Middle East FZE | United Arab Emirates | 100% |
| Heckett MultiServ M.V. & M.S., C.A. | Venezuela | 100% |
EXHIBIT 21
HARSCO CORPORATION
Subsidiaries of the Registrant
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. | France | 50% |
| Phooltas Tamper Private Limited | India | 40% |
| p.t. Purna Baja Heckett | Indonesia | 40% |