Canfor Corp. says it will permanently shut down its sawmill and pellet mill in Chetwynd B.C., and will also shutter its sawmill in Houston, B.C. to redevelop that site.    The announcement comes just weeks after the company announced it will permanently shut down its pulp mill in Prince George.    Canfor is rationalizing its sawmill and pulp mill operations in B.C. to align with a shrinking fibre supply.    The company plans to build a "new, modern globally competitive manufacturing facility" in Houston to produce "high value ...