Halide gas detector being used to check for leaks in portable chamber during fumigation of European pine shoot moth. Photo by: W.C. Guy and V.M. Carolin Date: March 1961 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Portland Station Collection; La Grande, Oregon. Image: PS-2680 To learn more about this photo collection see: Wickman, B.E., Torgersen, T.R. and Furniss, M.M. 2002. Photographic images and history of forest...
Topics: wcguy, foresthealthprotection, usda, European Pine Shoot Moth, stateandprivateforestry, march1961,...