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Mining is the extraction of valuable geological materials from the Earth and other astronomical objects. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Ore must be a rock or mineral that contains valuable constituent, can be extracted or mined and sold for profit. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water.
Broken Hill is a city in the far west of outback New South Wales, Australia. An inland mining city, is near the border with South Australia on the crossing of the Barrier Highway (A32) and the Silver City Highway (B79), in the Barrier Range. It is 315m above sea level, with a hot desert climate, and an average rainfall of 235mm. The closest major city is Adelaide, the capital of South Australia, which is more than 500km to the southwest and linked via route A32.
BHP Group Limited is an Australian multinational mining, metals, natural gas petroleum public company that is headquartered in Melbourne, Victoria, Australia.
Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver.
In geology, a lode is a deposit of metalliferous ore that fills or is embedded in a fissure in a rock formation or a vein of ore that is deposited or embedded between layers of rock. The current meaning dates from the 17th century, being an expansion of an earlier sense of a "channel, watercourse" in late Middle English, which in turn is from the 11th-century meaning of lode as a ‘course, way’.
Anglo American plc is a British listed multinational mining company with headquarters in London, England. It is the world's largest producer of platinum, with around 40% of world output, as well as being a major producer of diamonds, copper, nickel, iron ore and steelmaking coal. The company has operations in Africa, Asia, Australia, Europe, North America and South America.
Cockatoo Island is an island in the Buccaneer Archipelago off the coast of Western Australia near the town of Derby. It was mined for iron ore by the Broken Hill Proprietary Company from 1951 until 1984. Koolan Island is a neighbouring island that was also mined by BHP for high grade iron ore. It was most recently mined by Perth-based mining company, Pluton Resources until the company was placed under administration in September 2015.
The Southeast Missouri Lead District, commonly called the Lead Belt, is a lead mining district in the southeastern part of Missouri. Counties in the Lead Belt include Saint Francois, Crawford, Dent, Iron, Madison, Reynolds, and Washington. This mining district is the most important and critical lead producer in the United States.
The Homestake Mine was a deep underground gold mine located in Lead, South Dakota. Until it closed in 2002 it was the largest and deepest gold mine in North America. The mine produced more than forty million troy ounces of gold during its lifetime. This is about 2,500 cubic feet (71 m3) or a volume of gold roughly equal to 18,677 US gallons.
Mining in Iran is still under development, yet the country is one of the most important mineral producers in the world, ranked among 15 major mineral-rich countries, holding some 68 types of minerals, 37 billion tonnes of proven reserves and more than 57 billion tonnes of potential reserves worth $770 billion in 2014. Mineral production contributes only 0.6 per cent to the country's GDP. Add other mining-related industries and this figure increases to just four per cent (2005). Many factors have contributed to this, namely lack of suitable infrastructure, legal barriers, exploration difficulties, and government control.
Mount Isa Mines Limited ("MIM") operates the Mount Isa copper, lead, zinc and silver mines near Mount Isa, Queensland, Australia as part of the Glencore group of companies. For a brief period in 1980, MIM was Australia's largest company. It has pioneered several significant mining industry innovations, including the Isa Process copper refining technology, the Isasmelt smelting technology, and the IsaMill fine grinding technology, and it also commercialized the Jameson Cell column flotation technology.
Silver mining in Nevada, a state of the United States, began in 1858 with the discovery of the Comstock Lode, the first major silver-mining district in the United States. Nevada calls itself the "Silver State." Nevada is the nation's second-largest producer of silver, after Alaska. In 2014 Nevada produced 10.93 million troy ounces of silver, of which 6.74 million ounces were as a byproduct of the mining of gold. The largest byproducers were the Hycroft Mine, the Phoenix Mine, the Midas Mine and Round Mountain.
The Broken Hill Ore Deposit is located underneath Broken Hill in western New South Wales, Australia, and is the namesake for the town. It is arguably the world's richest and largest zinc-lead ore deposit.
The Silverton Tramway was a 58-kilometre-long 1,067 mm railway line running from Cockburn on the South Australian state border to Broken Hill in New South Wales. Operating between 1888 and 1970, it served the mines in Broken Hill, and formed the link between the 1,435 mmstandard gauge New South Wales Government Railways and the narrow gauge South Australian Railways lines. It was owned and operated by the Silverton Tramway Company (STC).
Lisheen Mine is a former lead-zinc-silver mine located between the villages of Moyne and Templetuohy in County Tipperary, Ireland. In the Rathdowney Trend, Lisheen was an underground mine where the Lisheen deposit lies at an average depth of 170 metres below surface. The mine closed in 2015.
Consolidated Zinc was an Australian mining company from 1905 to 1962.
The Hill 50 Gold Mine, now referred to as the Mount Magnet Gold Mine, is a gold mine located 4 km north-west of Mount Magnet, Western Australia. The mine was, until July 2010, owned by Harmony Gold and had been placed in care and maintenance since 2007. In July 2010, Harmony sold the mine to Ramelius Resources, owner of the Wattle Dam Gold Mine, for A$40 million.
The King of the Hills Gold Mine, formerly the Tarmoola Gold Mine, is located 29 km north-west of Leonora, Western Australia. The mine was placed in care and maintenance from September 2004, when a pit wall failure forced its closure. It is owned by Saracen Mineral Holdings Limited.
The Roy Hill mine is an iron ore mine in the Chichester Range in the Pilbara region of Western Australia, located 115 kilometres (71 mi) north of Newman and 277 kilometres (172 mi) south of Port Hedland. With indicated and inferred reserves of more than 2.4 billion tonnes, it is expected to become one of the largest mining projects in Australia. Mining operations will produce 55 million tonnes of iron ore per annum with an operating life of more than 20 years.
North Limited was a diversified mining and resources company. Although based in Australia, its operations eventually extended to six continents. By the late 20th century the company had become the fourth largest iron ore exporter in the world with expansion underway which would have made it equal third. Its biggest asset was a majority stake in Robe River, a major miner of the Pilbara iron ore deposits of Western Australia and the world's lowest cost producer of iron ore.
References
- 1 2 3 "Broken Hill Mine" (PDF). segweb.org. 2010. Archived from the original (PDF) on 13 November 2013.