Project Description

The Willroy - Geco Mines are a mining operation that produced metals including copper, zinc and gold located approximately 400 km East of Thunder Bay, Ontario, near Manitouwadge.

In 2005 a new treatment plant began operating at the Geco site that employs a High Density Sludge (HDS) process for treating acid mine drainage (AMD) from the closed Willroy and Geco Mine Sites. The plant uses reactor tanks in addition to the Lime/Sludge Mix Tank and Clarifier.  Contaminated water is collected from both mines prior to being treated through the HDS plant. The plant is designed to operate at a continuous flow rate of 500-930 m3/h (depending on metal loading).  The Clarifier/Thickener is a solid pour concrete structure that is 70m in diameter with a side wall of 5m. Tanks with a volume of approximately 750m³ were also constructed of solid pour concrete.

Tom Jones Corporation was the General Contractor for the construction of Clarifier and Storage Tanks. TJC Superintendents and Project Managers coordinated with owner, consultants and sub-contractors to excavate, form and pour the clarifier and tanks.