EXHIBIT 23(a)


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS




        As independent public accountants, we hereby consent to the use
        of our report (and to all references to our Firm) included in or
        made part of this registration statement on Form S-3 of Thermo
        TerraTech Inc.



        ARTHUR ANDERSEN LLP

        Boston, Massachusetts  
        May 31, 1996