SEATTLE — Plum Creek Timber Co. Inc., a producer of lumber, plywood and MDF, on Oct. 22 announced that it completed its previously approved $200 million open-market share repurchase program and that its board of directors authorized an additional $200 million share repurchase program, according to World Panel Industry. The program authorizes the company, at its own discretion, to periodically buy back shares of its outstanding common stock with open-market purchases as market conditions warrant. Read more.