BUSINESS
August 18, 1993 | JAMES S. GRANELLI, TIMES STAFF WRITER
Security Environmental Systems Inc. said Tuesday that it has negotiated a two-year contract to transport and dispose of hazardous waste from northern Mexico manufacturing plants operated by U.S.-owned companies. The contract with Eco Transportes Internacionales SA de CV in Juarez, Mexico, is the first step in winning contracts with U.S. companies for hauling waste, the company said. Under treaties, U.S.