One hundred and fifteen jobs are to go at Seneca sawmill in Eugene, Oregon.
The owners blame low-priced wood imports from Canada and a lack of federal logs for the lay-offs.
Seneca vice-president Dale Riddle said harvest resrictions on US federal forestland affect independent operators like Seneca who rely partly on public timber to supply mills.
The job losses follow a decision by Roseburg Forest Products in Douglas County to cut 450 jobs, mainly at a plywood plant near Roseburg.
