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Missouri University of Science and Technology
Caving mining<br />Limestone -- California -- Riverside County
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Caving Procedure At The Crestmore Limestone Mine Of The Riverside Cement Company, Riverside County, Calif., Randall Helt Wightman
Caving Procedure At The Crestmore Limestone Mine Of The Riverside Cement Company, Riverside County, Calif., Randall Helt Wightman
Professional Degree Theses
"The following paper describes current mining practices of the Riverside Cement Company at its Crestmore Mine, Riverside, California. For a number of years the Riverside Cement Company obtained its raw materials by surface quarry operations, but after these deposits were exhausted for equipment available at that time, the Company started underground mining. Mine workings were begun in 1927 to 1930 for the recovery of limestone by block-caving methods"--Introduction, page 1.