Jun 08, 2011. /Lesprom Network/. Stimson Lumber Co.'s stud mill in Tillamook, Oregon, USA, is taking a week of downtime. The sawmill went down June 6 and will resume production June 13, as Random Lengths reported. The planer will go down June 9 and be back up in the middle of next week. A thin log deck due to weather conditions was cited. Stimson Lumber Company is a privately-held forest products and natural resource company based in Portland, Oregon.