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                                                                      EXHIBIT 21
 
Subsidiaries of the Registrant:
 
        American Ash Recycling of New England, Limited Partners, a Florida
        Limited Partnership (60% owned)
 
        American Ash Recycling of Tennessee, Limited Partners, a Florida Limited
        Partnership (60% owned)
 
        EWM Holdings, L.P., a Delaware Limited Partnership (50% owned)
 
        Eastern Waste Management Corp., a New York Corporation (a 95% owned
        subsidiary of EWM Holdings, L.P.)
 
        RILCO Group, Inc., a New York Corporation (a 95% owned subsidiary of EWM
        Holdings, L.P.)
 
        KTI Ash Recycling, Inc., a Delaware Corporation
 
        KTI Bio Fuels, Inc., a Maine Corporation (100% owned subsidiary of Kuhr)
 
        KTI Environmental Group, Inc., a New Jersey Corporation
 
        KTI Limited Partners, Inc., a Delaware Corporation
 
        KTI Operations, Inc., a Delaware Corporation
 
        KTI Recycling, Inc., a Delaware Corporation
 
        KTI Specialty Waste Services, Inc., a Maine Corporation
 
        KTI Transportation Services, Inc., a Maine Corporation
 
        Kuhr Technologies, Inc., a New Jersey Corporation ("Kuhr") (83% owned)
 
        Maine Energy Recovery Company Limited Partnership, a Maine Limited
        Partnership (a 10% owned subsidiary of Kuhr and a 64.15% owned
        subsidiary of the Registrant)
 
        Manner Resins, Inc., a Maryland Corporation
 
        PERC, Inc., a Delaware Corporation (a 100% owned subsidiary of Kuhr)
 
        PERC Management Company, a Maine Limited Partnership (a 59.7% owned
        subsidiary of Kuhr and a 40.3% owned subsidiary of the Registrant)
 
        Power Ship Transport, Inc., a Delaware Corporation
 
        Timber Energy Investments, Inc., a Delaware Corporation
 
        Timber Energy Plastic Recycling, Inc., a Delaware Corporation
 
        Timber Energy Resources, Inc., a Texas Corporation
 
        Specialties Environmental Management Company, a Maine limited liability
        company (55% owned)
 
All subsidiaries are 100% owned, unless otherwise indicated above.