Hematite, also spelled as haematite, is a common iron oxide compound with the formula, Fe2O3 and is widely found in rocks and soils. Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe
2O
3. It has the same crystal structure as corundum (Al
2O
3) and ilmenite (FeTiO
3). With this it forms a complete solid solution at temperatures above 950 °C (1,740 °F).
Anthracite, also known as hard coal and black coal, is a hard, compact variety of coal that has a submetallic lustre. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.
The Lehigh Valley Railroad was a railroad in the Northeastern United States built predominantly to haul anthracite coal from the Coal Region in Northeastern Pennsylvania to major consumer markets in Philadelphia, New York City, and elsewhere.
Anthracite iron or anthracite pig iron is iron extracted by the smelting together of anthracite coal and iron ore, that is using anthracite coal instead of charcoal in iron smelting. This was an important technical advance in the late-1830s, enabling a great acceleration of the Industrial Revolution in the United States and in Europe.
The Lehigh Crane Iron Company, later renamed Crane Iron Company, was a major ironmaking firm in the Lehigh Valley from its founding in 1839 until its sale in 1899. It was based in Catasauqua, Pennsylvania, and was founded by Josiah White and Erskine Hazard, who financed its development through their Lehigh Coal & Navigation Company, which promoted the then-novel technique of smelting iron ore with anthracite coal. This was an important cost and energy savings technique, credited with eliminating the need for either expensive charcoal or coke producing processes and transport costs that proved central to the acceleration of the American industrial revolution.
Seend Ironstone Quarry and Road Cutting is a 3 acres (1.2 ha) Geological Site of Special Scientific Interest at Seend in Wiltshire, England, notified in 1965. The site contains facies of Lower Greensand containing specimens of fauna not found elsewhere.
The Thomas Iron Company was a major iron-making firm in Hokendauqua, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania from its founding in 1854 until its decline and eventual dismantling in the early 20th century.
The Catasauqua and Fogelsville Railroad was built in the 1850s to transport iron ore from local mines in Lehigh and later Berks County to furnaces along the Lehigh River in eastern Pennsylvania. Originally owned by two iron companies, the railroad later became part of the Reading Company, and parts of it remain in operation today.
Charlemagne Tower was an American lawyer and businessman active in acquiring land in the Schuylkill Valley in Pennsylvania and serving as an officer for coal and railroad companies. He organized and led a company of Union soldiers from Pottsville in a 3-month enlistment during the American Civil War, when he was commissioned as captain.
The Maryland Mining Company is a historic coal mining, iron producer and railroad company that operated in Allegany County, Maryland, United States.
M. A. Hanna Company was an iron ore processing company located in Cleveland, Ohio, United States.
Romania ranks tenth in the world in terms of the diversity of minerals produced in the country. Around 60 different minerals are currently produced in Romania. The richest mineral deposits in the country are halite.
The history of coal mining in the United States starts with the first commercial use in 1701, within the Manakin-Sabot area of Richmond, Virginia. Coal was the dominant power source in the late 1800s and early 1900s, and although in rapid decline it remains a significant source of energy in 2023.
The Ironton Railroad was a shortline railroad in Lehigh County, Pennsylvania. Originally built in 1861 to haul iron ore and limestone to blast furnaces along the Lehigh River, traffic later shifted to carrying Portland cement when local iron mining declined in the early 20th century. Much of the railroad had already been abandoned when it became part of Conrail in 1976, and the last of its trackage was removed in 1984.
The Eastern Archipelago Company was a company incorporated by British royal charter in 1847. It was active on the island of Labuan off the coast of Borneo from its creation until its dissolution in 1858.
Pittsville is an unincorporated community in Pittsylvania County, in the U.S. state of Virginia.
Mining in North Korea is important to the country's economy. North Korea is naturally abundant in metals such as magnesite, zinc, tungsten, and iron; with magnesite resources of 6 billion tonnes, particularly in the North and South Hamgyong Province and Chagang Province. However, often these cannot be mined due to the acute shortage of electricity in the country, as well as the lack of proper tools to mine these materials and an antiquated industrial base. Coal, iron ore, limestone, and magnesite deposits are larger than other mineral commodities. Mining joint ventures with other countries include China, Canada, Egypt, and South Korea.
There are two types of coal found in Pennsylvania: anthracite, the hard coal found in Northeastern Pennsylvania below the Allegheny Ridge southwest to Harrisburg, and bituminous, the soft coal found west of the Allegheny Front escarpment). Anthracite coal is a natural mineral with a high carbon and energy content that gives off light and heat produced energy when burned, making it useful as a fuel. It was possibly first used in Pennsylvania as a fuel in 1769, but its history begins with a documented discovery near Summit Hill and the founding of the Lehigh Coal Mine Company in 1792 to periodically send expeditions to the wilderness atop Pisgah Ridge to mine the deposits, mostly with notable lack of great success, over the next 22 years.
The mining industry of Morocco is important to the national economy. Morocco is the world's largest producer of phosphate, and contains about 75% of the world's estimated reserves. Mining contributed up to 35% of exports and 5% of GDP in 2011. Foreign investors have found the investment climate, the infrastructure, fiscal situation, and political stability very favorable to continue business in the country in this sector.
The Tamar Hematite Iron Company (THIC) was an iron mining and smelting company that operated from April 1874 to December 1877, in the area close to the location of the modern-day township of Beaconsfield, Tasmania, Australia.
