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Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. [4] It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk.
USG has a large gypsum plant located 17 miles (27 km) west of El Centro, California, along highway Interstate 8, at Plaster City. [25] The Plaster City location makes Sheetrock brand gypsum panels. The gypsum is mined from a quarry located 20 miles (32 km) to the north, in the Fish Creek Mountains of Imperial County. The quarry is estimated to ...
Rhodes' mining operation closed in 2005. [19] [20] As of 2008, BPB operated a processing plant at Blue Diamond Hill, for gypsum that was shipped in from Arizona. [11] Rhodes' residential project received opposition, and he resumed gypsum mining on his property around 2011, while still trying to get the housing proposal approved. [19]
The community is named for deposits of the gypsum rock near the original town site. [3] Gypsum mining in the area by U.S. Gypsum Corporation began in 1902 and stopped in the 1970s, however the company continues to operate a manufacturing plant in the community. [4] Children from Gypsum families generally attend the Port Clinton City School ...
Phosphogypsum is a by-product from the production of phosphoric acid by treating phosphate ore with sulfuric acid according to the following reaction: . Ca 5 (PO 4) 3 X + 5 H 2 SO 4 + 10 H 2 O → 3 H 3 PO 4 + 5 (CaSO 4 · 2 H 2 O) + HX
The Alabaster Historic District is a 400-acre mining complex in Iosco County, Michigan, centered on an open pit gypsum mine.It is bounded by on the east by Lake Huron, on the north by Gypsum Road, on the south by Keystone Road, and on the west by Rempert Road, south of Tawas City, the county seat.
Rajasthan State Mines & Minerals Limited [1] (RSMML) is a public sector enterprise of the Government of Rajasthan that is primarily engaged in mining and marketing high grade rock phosphate, lignite, limestone and gypsum (non-metallic minerals) through its mines located at various locations in Rajasthan.
Planning for the development of room and pillar mines operates in much the same way as other mining methods, [10] and begins with establishing ownership of the mine. . Following this, the geology of the mine must be analysed, as this will determine factors like the lifespan of the mine, the production requirements, and the cost to develop and