KP-2402-R2 - CLEAR LAKE - Klamath Project. Soil sampling procedure. Veimeir soil sampling tube, about 1 1/8" in diameter being driven into soil on bottom of Clear Lake. The tube is inside 3" pipe which has been...

KP-2394-R2 - Klamath Project--CLEAR LAKE RESERVOIR. Samples are obtained by driving 3" pipe, shown in center of raft, into lake bottom and inserting soil sampling tube inside this pipe; June 11, 1957; Photo by...

KP-2404-R2 - CLEAR LAKE - Klamath Project. Pumping air into bottom section of vehmeir tube to extrude soil sample. Winch at right is used to lower and raise 3" pipe in center of raft. Small winch at corner of...

KP-2401-R2 - CLEAR LAKE - Klamath Project. Raft is propelled by one 15 H.P. and one 10 H.P. outboard motor; October 16, 1957; Photo by K. J. Greene

KP-2403-R2 - CLEAR LAKE - Klamath Project. Lifting and unscrewing sections of Vehmeir tube; October 16, 1957; Photo by K. J. Greene

KP-2405-R2 - CLEAR LAKE - Klamath Project. Sample is shown lying ahead of sampling tube. Selected samples are stored in carton shown; October 16, 1957; Photo by K. J. Greene

KP-2406-R2 - CLEAR LAKE - Klamath Project. Dave Bunger is sighting two buoys with a sextant. At least 3 located points are used for a fix on the map; October 16, 1957; Photo by K. J. Greene

KP-1194-R2 - Klamath Project. Region II. Another yard and a half of soil in Tulelake is dumped from a Bucyrus Erie dragline that is being used to construct a new drain to take care of the expanding...

KP-2560-R2-Klamath Project - CLEAR LAKE GROUND FRACTURE, Section 16, T. 46 N., R. 7 E. Exploratory hole showing width of crack 18 feet below original ground. Soil texture first 6 feet gravelly clay loam, from...

KP-1535-R2 - Klamath Project. Six-inch slide and folding rules used for comparison; August 29, 1947; Photo by Dorwin Grise; The slide-rule case bears the photographer's last name and initials: "D.E.Grise"