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Marshall Macklin Monaghan, Toronto

MMM Group Limited (MMM) is one of Canada's premier engineering consulting firms specializing in infrastructure, environmental, geomatics, facility development and transportation. Perseis became the largest shareholder of MMM in 2003 with the balance held by the employees. Since that time, MMM has tripled its size through the strategic acquisition of eight consulting engineering firms. The company was sold to OSI MMM Investment Management Inc. in October 2009