Jun 25, 2010. /Lesprom Network/. Tolko Industries is curtailing its Armstrong, British Columbia division for a minimum of 1 week. The curtailment, scheduled for market re-adjustment, will begin on July 5. 150 employees will be affected, as ForestTalk reported. Tolko Industries is a private company with more than 3,500 employees in Western Canada, including in Armstrong, Lavington and Lumby. It’s a major producer and marketer of lumber, veneer, plywood, oriented strand board, and kraft papers, with manufacturing operations.