Jan. 3 - 1932. Sunday. Made trip to three old mine tunnels east of highway one mile south of Poatneff. Twelve inches snow on ground. Outside temperature 25° F. Time of day 2 P.M. Weather - cloudy. Tunnel # 1. 108 ft. deep. - Boarded up to prevent caving the entire length. Temperature at back of mine 29 degrees F. Rack rats could be heard behind walled sides of mine. No bats. Tunnel # 2. 75 ft deep. Temperature at back of mine 43° F. - Outside 25° F. No bats found. One large rat was seen - it retreated into a crevice in the side of the mine. This mine was not timbered at all. Opening at entrance - 5 square feet.