VANCOUVER — West Fraser announced it will introduce variable operating schedules at five of its BC sawmills that will result in an estimated decrease of production in the range of 15-25% of current B.C. lumber production. …The potential effect of the revised operating schedules could be an aggregate reduction by up to an estimated 100 million board feet through to the end of the year. West Fraser also announced that it would curtail B.C. plywood production for two weeks reducing output by approximately 9 Msf. The variable operating schedules for sawmill operations and the curtailment of plywood operations in B.C. are expected to commence September 16, 2019. …West Fraser anticipates continuing the variable operating schedules at its B.C. sawmills until market and economic conditions support a return to full production.