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Hydraulic mining. A miner using a hydraulic jet to mine for gold in California, from The Century Magazine January 1883. Hydraulic mining is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. [1] In the placer mining of gold or tin, the resulting water-sediment slurry is directed through sluice ...
Chinese laborers also had a significant presence in unskilled labor as well in quartz mining mills, feeding the machines that crushed rocks and revealed gold from the California granite. Chinese miners were more commonly hired by water companies in order to transport water to hydraulic presses. [15]
Southern Pacific 9010 is a KM ML 4000 C'C' diesel-hydraulic locomotive, built in 1964 by German manufacturer Krauss-Maffei for the Southern Pacific Railroad. SP 9010 generated 4,000 horsepower (3,000 kW) from two 2,000-horsepower (1,500 kW) V16 Maybach MD870 diesel engines. It was painted to Southern Pacific's 1958 standard, the so-called ...
Heavy Press Program. The Heavy Press Program was a Cold War -era program of the United States Air Force to build the largest forging presses and extrusion presses in the world. These machines greatly enhanced the US defense industry's capacity to forge large complex components out of light alloys, such as magnesium and aluminum.
The hydraulic press depends on Pascal's principle.The pressure throughout a closed system is constant. One part of the system is a piston acting as a pump, with a modest mechanical force acting on a small cross-sectional area; the other part is a piston with a larger area which generates a correspondingly large mechanical force.
The Big Creek Hydroelectric Project is an extensive hydroelectric power scheme on the upper San Joaquin River system, in the Sierra Nevada of central California. The project is owned and operated by Southern California Edison (SCE). [1] The use and reuse of the waters of the San Joaquin River, its South Fork, and the namesake of the project ...
Hydraulic machinery. A simple open center hydraulic circuit. An excavator; main hydraulics: Boom cylinders, swing drive, cooler fan, and trackdrive. Fundamental features of using hydraulics compared to mechanics for force and torque increase/decrease in a transmission. Hydraulic machines use liquid fluid power to perform work.
California Zephyr. (1949–1970) The California Zephyr was a passenger train that ran between Chicago, Illinois, and Oakland, California, via Omaha, Denver, Salt Lake City, Winnemucca, Oroville and Pleasanton in the United States. It was operated by the Chicago, Burlington & Quincy (CB&Q), Denver & Rio Grande Western (D&RGW) and Western Pacific ...
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