- BP Oil Company
- Suncor Energy
- VFT Inc.
- Huntsman Corp.
- Marsulex Inc.
- Sun Canadian Pipeline Ltd.
- Sterling Pulp Chemicals
- Ontario Hydro
- Union Gas Ltd.
- St. Lawrence Seaway
- Laidlaw Environmental
- Sunoco Inc.
- Nova Scotia Power
- Chinook Group
- Syncrude Canada Ltd.
- Westroc Inc.
- Colt Engineering Corp.
- Cooper Creek Chemical
- JemPak Canada Inc.
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- Petro-Canada Products
- Falconbridge Limited
- Bowater Pulp & Paper
- University of Western Ontario
- Elf Atochem
- Paul Wurth Limited
- Methanex Inc.
- Mobil Oil Canada
- Noranda Inc.
- Iogen Inc.
- Witco Chemical
- Halozone Recycling
- Ministry of Energy (ON)
- Brunswick Mining & Smelting
- North Atlantic Refining Ltd.
- biox Corporation
- Multimodal Logistic Systems
- Stantec Inc.
- Safety-Kleen
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