ADCO SERVICES INC.
BECHTEL CORP.
CABRERA SERVICES INC.
CLEAN HARBORS INC.
EDF
HOLTEC INTERNATIONAL
JACOBS SOLUTIONS INC.
PERMA-FIX ENVIRONMENTAL SERVICES INC.
STUDSVIK AB
TRADEBE
US ECOLOGY INC. (A SUBSIDIARY OF REPUBLIC SERVICES)
Veolia