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                                                                EXHIBIT 24




                               POWER OF ATTORNEY

                                  (Form 10-K)

           Know all men by these presents, that the individuals whose
      signatures appear below constitute and appoint Alan S. McKim and
      James A. Pitts, and each of them acting alone, his true and lawful
      attorneys-in-fact and agents with full power of substitution and
      resubstitution, to sign the Clean Harbors, Inc. Form 10-K Annual
      Report Pursuant to Section 13 or 15(d) of the Securities and
      Exchange Act of 1934 for the fiscal year ended December 31, 1994,
      and to file the same with all exhibits thereto, and all documents in
      connection therewith, with the Securities Exchange Commission,
      granting unto said attorneys-in-fact and agents, and each of them,
      full power and authority to do and perform each and every act and
      thing requisite and necessary to be done in and about the premises,
      as fully to all intents and purposes as he might or could do in
      person, hereby ratifying and confirming all that said substitute or
      substitutes may lawfully do or cause to be done by virtue hereof.



      Signature                    Title                 Date
      ---------                    -----                 ----
                                              

      /s/ Christy W. Bell         Director          January 23, 1995
      -------------------- 
      Christy W. Bell      
                           
                           
      /s/ John F. Kaslow          Director          January 23, 1995
      -------------------- 
      John F. Kaslow       
                           
                           
      /s/ Daniel J. McCarthy      Director          January 24, 1995
      -------------------- 
      Daniel J. McCarthy   
                           
                           
      /s/ Lorne R. Waxlax         Director          January 29, 1995
      -------------------- 
      Lorne R. Waxlax      



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