ganister การใช้

• Ganister mining and quarrying were other industries that grew in the area.
• There were three ganister mines in the immediate Worrall area.
• Coal, iron ore, ganister, and limestone are found in the vicinity.
• The permanent ones took longer, encountering beds of ganister, coal and rock.
• Materials may include calcium aluminate cements, fire clay, ganister and minerals high in aluminum.
• In the vicinity are found bituminous coal, ganister rock, fire clay, and some timber.
• Where a ganister underlies coal as a seatearth, it typically is penetrated by numerous root traces.
• The seat earths of the seams yielded ganister ( needed for furnace linings ) and fire clay.
• Ganister ( hard sandstone ) and dolerite ( whinstone, basalt ) have also been quarried in the past in Weardale.
• Large quantities of locally occurring fireclay were also exploited, as well as ganister ( a clay used to make refractory furnace linings ).
• The railroad also carried substantial amounts of ganister rock, lumber and passengers with some agricultural goods, concrete, road tar and general freight.
• Mineral extraction has also occurred above St John's Chapel with the extraction of ganister which was used in the steel process at Consett.
• The silica-cementation that creates a ganister typically results from dissolution of plant opal within a soil profile and its redeposition as silica cement within it.
• For a period of 130 years from 1784 the common was in private hands and was an area of mining and quarrying, with coal and ganister being mined and sandstone quarried for building.
• The bricks were used to line the furnaces and were made from ganister, a sort of sandstone and from fireclay from the Stannington pot clay seam which was prevalent in the Loxley area.
• In the past, the woods have been managed with the coppice-with-standards technique for the production of charcoal, and ganister is also believed to have been mined in this area.
• From detailed studies of ganisters, geologists have concluded that the typical ganister is the silicified surface horizon, i . e . E horizon, of a buried soil, called  paleosol, developed in sandy sediments.
• Just after the turn of the 20th century a large Ganister quarry was established above Saltillo on Jacks Mountain by Mount Union Refractories ( later United States Refractories and North American Refractories ) to supply their plant in Mount Union, Pennsylvania.
• Large plants for the manufacture of silica brick were developed at Mount Union around the turn of the 20th century, and these became major customers for coal and also for ganister rock, which was quarried at multiple points along the railroad.
• Near Penistone, ochre discharged into the river from old ganister mine workings, giving it an orange colour for about six miles, eventually remedied, while at Beeley Wood, the ochre comes from a pile of waste metal on the river bank.