West Fraser Timber Co. Ltd. said weekly lumber shipments from the west of the country plunged about 25% to 30% in the second half of the month following severe flooding in British Columbia.  Pulp shipments to the port of Vancouver have averaged less than 20% of normal volumes, the Vancouver-based company said Tuesday in a statement. West Fraser has reduced operations scheduled at various west Canadian locations. “While West Fraser is utilizing alternative transportation routes and methods to the extent they are available to continue servicing customers, the magnitude and duration of the impact ...