


(* Please note this list does not include sand or gravel quarries.)
"Doodlebug and Dolomite groups of claims are in the South Park district 30 miles east of north from Trona and about 8 miles southeast of Ballarat. The owners are Ernest A. Slafter, Box 362, Trona; F. Zerby, Wilbur Harrison, and Harry Willey. Doodlebug group comprises 11 claims and Dolomite group 18 claims, a total of about 600 acres. The elevation is from 4000 to 5000. Up to 50 gallons of water per minute is said to be available.
"Slafter has been prospecting a seam of lead and silver ore on Doodlebug Nos. 1 and 2 claims. Equipment in 1945 consisted of an air compressor and drills, and a tramway was being installed. These claims are probably examples of many others that have been located primarily for metals, but which contain immense quantities of limestone or dolomite. This property has not been visited by the writer, and the geology has not been mapped in detail. The owner claims there are several hundred million tons of dolomite with few intrusions and no overburden; much of it is marble. The report MgCO3 content is 45 to 45.32 percent."
"Blue Star Mines, Limited, Room 510, 810 South Spring Street, Los Angeles, has been producer of limestone since 1938. The limestone is mined in connection with their talc-mining operations from their claims on Blue Pine Creek, 9 miles west of Big Pine.
"Talc occurs in masses in serpentine or on the contact of serpentine and crystalline limestone. The limestone is quarried nearby, lowered on a tram down the mountainside to a bin and hauled 11 miles in trucks to the grinding plant at Zurich on the railroad."
"Cerro Gordo Deposit. For some time about 1926, limestone was produced from underground workings of the Cerro Gordo lead-silver mine, 8 miles east of Keeler, and was sent over a tramway to Keeler for railroad shipment to the plants of Natural Soda Products Company, 2 miles south of Keeler and to Clark Chemical Company, then at Bartlett, near the north end of the lake on the west side. Limestone and dolomite have been used to generate CO2 gas for making sodium carbonate from the desert lake deposits in Owens Lake and Serles Lake."
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