Unprecedented transportation disruptions caused by floods in British Columbia have sent lumber prices soaring, boosting revenues for many North American producers but piling fresh pressure on sawmills in the province that are struggling to get their lumber to market.  Softwood lumber prices have doubled since mid-November after road and rail links across B.C., which accounts for 16% of North American supply, were washed out by record-breaking rainfall.  Even before the floods, a record price rally in 2021 boosted profits for many lumber producers, underpinning a strong year for mergers and acquisitions ...