The exterior of Hughes Research Laboratories where rock bits were test-drilled in Culver City, California in the 1940s. Transcribed from note taped to back of photo: "Rock bits are test-drilled in the laboratory under conditions that duplicate, as far as is possible in the laboratory, those encountered in actual drilling. As a result, rotational speeds, loads, and fluid volume are closely controlled. The rig operator occupies a splash-proof booth above the 'cellar floor.' The instruments on his control panel provide for application and measurement of variable axial loading on the drilling bit up to 100,000 lbs., variable rotational speeds up to 400 rpm, measurement of bit penetration over a total vertical travel of 5 feet at rates up to 180 ft. per hour, and torque. On the panel, also, are several controls for the operation of mud pump and other accessory equipment."

An image of a girl leading the Armistice Day march in Boulder City. The parade signified the armistice signed by the allies of World War I and Germany. This day is now known as Veteran's Day in the United States.

Black and white image of children sitting in the yard of a cottage (similar to 450 others in the area) built by Six Companies, Inc. for their married employees in Boulder City. Many residents planted cactus and other shrubs indigenous to the area in their yards.

Black and white image of children standing outside of a cottage (similar to 450 others in the area) built by Six Companies, Inc. for their married employees in Boulder City. Many residents planted cactus and other shrubs indigenous to the area in their lawns.

From the Nan Doughty Photograph Collection (PH-00240)

From the Nan Doughty Photograph Collection (PH-00240)

Floor plan for a two bedroom ranch-style house in Boulder Green development, Boulder City, Nevada
Site Name: Boulder Green

Architecture Period: Mid-Century Modernist