Ore is natural rock or sediment that contains one or more valuable minerals concentrated above background levels, typically containing metals, that can be mined, treated and sold at a profit. The grade of ore refers to the concentration of the desired material it contains. The value of the metals or minerals a rock contains must be weighed against the cost of extraction to determine whether it is of sufficiently high grade to be worth mining, and is therefore considered an ore. A complex ore is one containing more than one valuable mineral.
Underground hard-rock mining refers to various underground mining techniques used to excavate "hard" minerals, usually those containing metals, such as ore containing gold, silver, iron, copper, zinc, nickel, tin, and lead. It also involves the same techniques used to excavate ores of gems, such as diamonds and rubies. Soft-rock mining refers to the excavation of softer minerals, such as salt, coal, and oil sands.
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique of extracting rock or minerals from the earth from an open-air pit, sometimes known as a borrow.
In mining, tailings or tails are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore. Tailings are different from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.
The Pine Point Mine is located on the south shore of Great Slave Lake between Hay River to the west and Fort Resolution to the east, in the Northwest Territories of Canada. It produced lead and zinc ores from a Mississippi Valley Type deposit between 1964 and 1988. Most of the mining was done by open-pit methods. The town of Pine Point was built by the mining company, Cominco, and when the mine closed the town was abandoned and demolished.
The Sullivan Mine is a now-closed conventional–mechanized underground mine located in Kimberley, British Columbia, Canada. The ore body is a complex, sediment-hosted, sedimentary exhalative deposit consisting primarily of zinc, lead, and iron sulphides. Lead, zinc, silver and tin were the economic metals produced. The deposit lies within the lower part of the Purcell Supergroup and mineralization occurred about 1470 million years ago during the late Precambrian (Mesoproterozoic).
Crandon mine was a mine proposed for northeastern Wisconsin, USA. It was to be situated near the town of Crandon and the Mole Lake Ojibwe Reservation in Forest County. The mine was the center of a multi-decade political and regulatory battle between environmentalists, American Indian tribes, sportfishing groups, and the State of Wisconsin and several large mining corporations. The purchase of the mine site in 2003 by the Sokaogon Ojibwe and Forest County Potawatomi marked a major victory for the tribes and environmental activists, and raised questions about the future of mining, economics, and tribal power in Wisconsin.
The Admiralty mining district is a mining area in the U.S. state of Alaska which consists of Admiralty Island. Silver and base metals are mined, with gold recovered as a by-product.
East Kutai Regency is a regency of East Kalimantan province, Indonesia. It has an area of 35,747.50 km2 and had a population of 253,904 at the 2010 census and 434,459 at the 2020 census; the official estimate as at mid 2022 was 425,613. The town of Sangatta is the capital of the regency.
The Whim Creek Copper Mine is a copper oxide mine, located in the City of Karratha in the Pilbara region of Western Australia.
PT United Tractors Tbk is a subsidiary of PT Astra International Tbk ("Astra") that operates in six business lines, namely Construction Machinery, Mining Contractor, Coal Mining, Gold Mining, Construction Industry, and Energy. United Tractors has 20 branch offices, 32 site supports, 6 representative offices, and 54 support points as well as other service installations.
Dairi Regency is an inland regency on the west shore of Lake Toba in North Sumatra, Indonesia. The regency covers an area of 1,927.77 square kilometres (744.32 sq mi) and it had a population of 269,848 people at the 2010 Census and 308,764 at the 2020 Census; the official estimate as at mid 2022 was 315,460. Its seat is at the town of Sidikalang.
The Batu Hijau mine is an open pit copper-gold mine operated by PT. Amman Mineral Nusa Tenggara. The mine is the second largest copper-gold mine in Indonesia behind the Grasberg mine of PT. Freeport Indonesia. The mine is located 1,530 kilometres (950 mi) east of the Indonesian capital Jakarta on Sumbawa, an island in West Nusa Tenggara Province, more precisely in the southern part of West Sumbawa Regency. The mine is the result of a ten-year exploration and construction program based on a 1999 discovery of the porphyry copper deposit. Production began in 2000.
The Bathurst Mining Camp is a mining district in northeast New Brunswick, Canada, centred in the Nepisiguit River valley, and near to Bathurst. The camp hosts 45 known volcanogenic massive sulfide (VMS) deposits typical of the Appalachian Mountains. Some of the ore is smelted at the Belledune facility of Xstrata. Although the primary commodity is zinc, the massive-sulphide ore body produces lead, zinc, copper, silver, gold, bismuth, antimony and cadmium.
The Canatuan mine was a gold/silver, copper/zinc open-pit mine located in the province of Zamboanga del Norte on the southern island of Mindanao, Philippines. The mine was operated from 2004 to January 2014 by TVI Resource Development (Phils) Inc., a former subsidiary of Canadian-based TVI Pacific Inc. The mine was operated within Mount Canatuan, a sacred mountain of the Subanen people, who protested against the mining company and its operations.
A nickel mine is a mine that produces nickel. Some mines produce nickel primarily, while some mines produce nickel as a side-product of some other metal that has a higher concentration in the ore.
Bangka Island is a small island located off the northeastern tip of Sulawesi, Indonesia. Bangka is known for its unspoiled beaches and dive tourism. It belongs administratively to the district of East Likupang in the North Minahasa regency, North Sulawesi province. The island has three main coastal villages: Lihunu, Kahuku, and Libas. Controversy exists over a Chinese company's development of an iron ore mining facility on the island, as the company's permits were revoked by Indonesian courts.
Muara Bungo is a town in the Indonesian province of Jambi, Sumatra. It is the capital of Bungo Regency, a regency (kabupaten) in Sumatra. It has a land area of 9.21 km2, and had a population of 21,243 as of the 2020 census; the official estimate as at mid 2022 was 21,600.
Nickel mining in Indonesia began with small-scale exploratory mining operations during the Dutch East Indies era and began to expand in the 1960s. Most of Indonesia's proven nickel reserves are located in the islands of Sulawesi and Halmahera, and the country has the largest annual production and reserves of nickel in the world.
Dairi Prima Mineral, officially PT Dairi Prima Mineral, is an Indonesian metal mining company and the owner of the Dairi mine in the Dairi Regency of North Sumatra, Indonesia.
