TranscriptionYELL20624 Mammoth Penstock - view showing pipeline after permanent repairs, two couplings installed plus one weld to fit curvature - 11/1954 - Ole Quist 54-529; YELL20624 Mammoth Penstock - condition of pipe damaged by movement of hillside - 11/1954 - Ole Quist 54-531; YELL20624 Mammoth Penstock - condition of pipe damaged by movement of hillside - 11/1954 - Ole Quist 54-533; YELL20624 Mammoth Penstock - condition of pipe damaged by sliding of hillside - 11/1954 - Ole Quist 54-530; YELL20624 Mammoth Penstock - condition of pipe damaged by sliding of hillside - 11/1954 - Ole Quist 54-532; YELL30128 Lake: Sewer Pump House, Building No. 721, 10/6/55 - Richards 55-379
