Oregon Trail Mushrooms is located on the east edge of Vale, Oregon, 15 miles west the Oregon-Idaho border. Elevation is about 2,240 ft. Winter temperatures reach -20 F and summer temperatures 100 F. The mushroom plant construction was financed through the USDOE Loan Guarantee Program and began production in 1986. Initially, 2,500 tons of white button mushrooms were produced annually. Production now includes other varieties and has increased to 4,000 tons annually. There are 130 employees year round