Mining is the extraction of valuable geological materials and minerals from the surface of the Earth. 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. The 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.
Sagadahoc County is a county located in the U.S. state of Maine. As of the 2020 census, the population was 36,699. Its county seat is Bath. In geographic area, it is the smallest county in Maine.
Durham is a town in Androscoggin County, Maine, United States. The population was 4,173 at the 2020 census. It is included in both the Lewiston-Auburn, Maine Metropolitan Statistical Area and the Lewiston-Auburn, Maine Metropolitan New England City and Town Area.
Sullivan is a town in Hancock County, Maine, United States. The population was 1,219 at the 2020 census. The town was named for Daniel Sullivan, an early settler. Colloquially referred to as "Sully" or "the Sullivans"—like many Maine municipalities composed of villages with geographic designations of the town proper—the municipality was incorporated in 1789. Located in the Upper Schoodic Peninsula sub-region of Maine's Downeast Acadia region, the municipality has been known as "Waukeag", "New Bristol", and later Sullivan; and once included the nearby communities of Hancock, Sorrento, and what would later be Township 7, South & Middle Districts. Once home to abundant granite quarries, the town of Sullivan is now a residential community for nearby Ellsworth and Mount Desert Island. Located along U.S. Route 1, the Taunton River, and Hog Bay, Sullivan is home to a reversing tidal falls and many scenic turnouts that dot the Schoodic National Scenic Byway along the Upper Schoodic Peninsula.
Topsham is a town in Orange County, Vermont, United States. The population was 1,199 at the 2020 census. It contains four villages: East Topsham, Topsham Four Corners, Waits River, and West Topsham.
A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact.
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.
Gahnite, ZnAl2O4, is a rare mineral belonging to the spinel group. It forms octahedral crystals which may be green, blue, yellow, brown or grey. It often forms as an alteration product of sphalerite in altered massive sulphide deposits such as at Broken Hill, Australia. Other occurrences include Falun, Sweden where it is found in pegmatites and skarns; and, in the United States, Charlemont, Massachusetts; Spruce Pine, North Carolina; White Picacho district, Arizona; Topsham, Maine; and Franklin, New Jersey.
Holman Staples Melcher was an American military officer, businessman, and politician active during the Reconstruction Era. A faction of historians and soldiers controversially contend that he led the downhill bayonet charge of Little Round Top during the Battle of Gettysburg. Aside from his feats during the American Civil War, he served two one-year terms as the Mayor of Portland, Maine, from 1889 to 1890.
The mining industry in India is a major economic activity which contributes significantly to the economy of India. The gross domestic product (GDP) contribution of the mining industry varies from 2.2% to 2.5% only but going by the GDP of the total industrial sector, it contributes around 10% to 11%. Even mining done on small scale contributes 6% to the entire cost of mineral production. Indian mining industry provides job opportunities to around 700,000 individuals.
Construction aggregate, or simply aggregate, is a broad category of coarse- to medium-grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined materials in the world. Aggregates are a component of composite materials such as concrete and asphalt; the aggregate serves as reinforcement to add strength to the overall composite material. Due to the relatively high hydraulic conductivity value as compared to most soils, aggregates are widely used in drainage applications such as foundation and French drains, septic drain fields, retaining wall drains, and roadside edge drains. Aggregates are also used as base material under foundations, roads, and railroads. In other words, aggregates are used as a stable foundation or road/rail base with predictable, uniform properties, or as a low-cost extender that binds with more expensive cement or asphalt to form concrete. Although most kinds of aggregate require a form of binding agent, there are types of self-binding aggregate which do not require any form of binding agent.
Colemans Quarry, grid reference ST726452 is a limestone quarry at Holwell, near Nunney on the Mendip Hills, Somerset, England.
In Arizona, copper mining has been a major industry since the 19th century. In 2007, Arizona was the leading copper-producing state in the country, producing 750 thousand metric tons of copper, valued at $5.54 billion. Arizona's copper production was 60% of the total for the United States. Copper mining also produces gold and silver as byproducts. Byproduct molybdenum from copper mining makes Arizona the nation's second-largest producer of that metal. Although copper mineralization was found by the earliest Spanish explorers of Arizona, the territory was remote, and copper could seldom be profitably mined and shipped. Early Spanish, Mexican, and American prospectors searched for gold and silver, and ignored copper. It was not until the completion of the Southern Pacific Railroad in 1876 that copper became broadly economic to mine and ship to market.
Mining in the United Kingdom produces a wide variety of fossil fuels, metals, and industrial minerals due to its complex geology. In 2013, there were over 2,000 active mines, quarries, and offshore drilling sites on the continental land mass of the United Kingdom producing £34bn of minerals and employing 36,000 people.
Washington Valley Park is a 715-acre (2.89 km2) public park between the first and second Watchung mountain ridge in the Martinsville section of Bridgewater Township, New Jersey that is administered by the Somerset County Park Commission. It contains the Washington Valley Reservoir and the Chimney Rock Hawk Watch.
Topsham is a town in Sagadahoc County, Maine, United States. Topsham was included in the Lewiston-Auburn, Maine metropolitan New England city and town area. The population was 9,560 at the 2020 census. It is part of the Portland–South Portland–Biddeford, Maine metropolitan statistical area. The town is home to the annual Topsham Fair.
Several mineral railways were constructed around Dunfermline in western Fife, Scotland, in the eighteenth century and later. Their purpose was to convey minerals to market from the outcropping coal deposits that had encouraged industrial activity in the area from an early date.
The geology of Maine is part of the broader geology of New England and eastern North America.
Bumpus quarry is a quarry in Oxford County, Maine, in the United States. It is primarily known for being the source of some of the largest beryl crystals ever found, up to 27 feet in length, weighing 26 tonnes.
Fort Andross, also known as Fort George and Cabot Mill, originally was a historic trading post and garrison built by the colonial British Empire to fortify against the Wabanaki Native Americans who were aligned with France during King William's War (1688–1697). It was adjacent to Brunswick Falls on the Androscoggin River in Brunswick, Maine. In the 19th century, the location of the fort has been used for several cotton mills including the Cabot Manufacturing Company. In 1986, the mills were transformed into office and retail space and renamed Fort Andross.
