Sinclar Group Forest Products Ltd. announced it is curtailing its lumber operations at Apollo Forest Products in Fort St. James, Lakeland Mills in Prince George, Canada, and Nechako Lumber Co. in Vanderhoof, for two weeks, effective January 30th.    “There are factors outside of our control that are having a detrimental impact on our business,” said Sinclar President Greg Stewart. “Regrettably, it is necessary to curtail our lumber operations at this time.”    Weak market conditions and constraints on an economical fibre supply are having a significant negative impact across the British Columbia forest ...