Walsh Integrated Environmental Systems
Walsh Integrated Recycling Systems Inc.
Warnock Hersey International (superintendence) Ltd.
Wattco Electric Canada Ltd.
Welisberg Investments Ltd.
Western Totalizator Company Limited
Westmount Moving & Warehousing Canada Inc.
Wheaton Holdings Inc.
Whitfuoco Maintenance & Property Management Inc.
Wil-Aide Medical Inc.
Wilner Holdings 2001 Ltd.
Wizcor Investments Inc.
Wizmet International Inc.
Workhorse Canada Inc.