Maureen McGuinness is a director in Paterson & Cooke Canada Inc. in the Sudbury, Ontario, practice. She has more than 30 years of experience working in mining and milling, and specifically in paste backfill design and operations. Her expertise includes backfill operation, backfill management planning, dry tailings plant-feed operations, hydraulic modelling of distribution systems, startup and commissioning of backfill operations and training of staff.