"Japanese well drilling rig - left behind - Being used by U.S. forces - Biak" From "Darkroom Soldier": "Well Drillers. To find a fresh water source for washing and bathing, unidenitified men of the 17th Squadron Utilities Section quickly learned to…
"Japanese well drilling apparatus left behind as they were driven back. Being used by U.S. to drill a well for fresh water at 17th Tact. Recon Sqdn camp site at Biak Island - Dutch New Guinea"