UP: Coal Glossary

Mining Coal mining is performed through two major methods; strip mining or underground mining. Mining, Strip Strip mining involves the use of large equipment which removes overburden (rock, dirt, etc.), exposing the seam of coal. This method is usually used when the coal seam lies close to the ground surface and the overburden can be removed

Circular 891

lost-in-mining.--Coal remaining in the ground after all extraction is completed. Lost-in-mining includes coal that is (1) left to support mine roofs, (2) too thin to mine, (3) unmined around oil, gas, water, and disposal wells, (4) unmined around shafts and electrical and water conduits, (5) unmined as barrier pillars adjacent to mine or

Coal types

Coal-bearing formations underlie about 300,000 square kilometres, almost half of Alberta. In 2014, nine mine sites produced approximately 30.8 million tonnes (Mt) of marketable coal. Subbituminous coal accounted for 78% of the total, metallurgical bituminous coal the remaining 22%. Six surface mines produce subbituminous coal.

OPINION: Why commercial coal mining is a much

May 25, 2020Coal mining has remained a government monopoly since 1973. Baby steps were taken in 2015 to open the sector with a few coal mines being auctioned to captive end-users. Reversing this four-and-a-half-decade old policy, the Union Government's recent announcement to permit coal mining for commercial sale and exploitation marks a fundamental

Natural Resources in Africa

Coal Mining in Africa. Discover more about the history of coal mining, where coal is mined, and how coal is used around the world. Read more. The materials we will survey here are ubiquitous across the continent, and are largely untapped. From Nigeria to South Africa,

Coal Mining – Fenner Dunlop Conveyor Belting

Coal mines, coal preparation Fenner Dunlop produces the highest quality fire retardant, straight warp, steel cord, and premium plied belting for all underground and surface applications. Fenner Dunlop straight warp, belts, like MineFlex, are used extensively in underground mines for the extraction of both thermal coal and coking coal.

Coal explained

Bituminous coal in the United States is between 100 million and 300 million years old. Bituminous coal is the most abundant rank of coal found in the United States, and it accounted for about 47% of total U.S. coal production in 2018. Bituminous coal is used to generate electricity and is an important fuel and raw material for making iron and

Coal, iron and bauxite top list of most

Sep 19, 2018A coal mine in Inner Mongolia. Credit: Wikimedia. Gypsum is a component of a range of construction materials, such as wallboard and cement, and global production of the mineral has increased steadily from 258.1 million tonnes in 2012. China is the world's largest producer, accounting for 130 million tonnes in 2016, significantly more than

what are the material used in fabrication for coal mill

grinding material used with coal - bictanl. grinding machine used to grind the coal material A ball mill is a type of grinder used to grind and blend materials for use in mineral The ball mill is used for grinding materials such as coal, pigments, and the invention of steam power that an effective ball milling machine could be built [Online Chat].

Global Coal Mining to 2023 the impact of COVID

Figure 9: Global Coal Mining – Coal Production in Indonesia By Type (Million Tonnes), 2000–2023 Figure 10: Global Coal Mining – Projects Count by Country by Stage, 2020 Figure 11: Global Coal Mining – Quarterly Coal Prices (US$/Tonne), Q1 2014-Q4 2019

Mines ministry seeks public hearing exemption for

Jun 26, 2020Impact on ecology is severe and diverse In the June 12 meeting, the expert panel was briefed about the major differences in coal and non-coal mining, like mining areas for coal are mostly valleys while for non-coal minerals they are hillocks. It also highlighted that the majority of the non-coal mines are located away from the habitation and hence the impact of emissions on the habitation is

Bituminous coal

Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt.It is of higher quality than lignite coal but of poorer quality than anthracite.Formation is usually the result of high pressure being exerted on lignite. Its coloration can be black or sometimes dark brown; often there are well-defined bands of bright and dull material within the

Coal Ash Facts provides important facts about coal ash

In 2007, the United States produced 131 million tons of coal combustion products. While 43 percent were used beneficially, nearly 75 million tons were disposed of. By using coal ash instead of disposing of it in landfills we are avoiding the environmental degradation and energy costs associated with mining materials.

Mining Methods

Continuous mining equipment is used to cut the coal from the mining face. Generally, openings are driven 20 feet wide and the pillars are generally rectangular in shape. As mining advances, a grid-like pattern of entries and pillars is formed. Shuttle cars are used to transport coal to the conveyor belt for transport to the surface.

coal mining

coal mining, physical extraction of coal resources to yield coal; also, the business of exploring for, developing, mining, and transporting coal in any form. Strip mining is the process in which the overburden (earth and rock material overlying the coal) is removed to expose a coal seam or coal bed.

Mining company product equipments and minerals

Mining is the removal of valuable raw materials or other geological materials from the earth, from an ore body, vein or (coal) seam. The term also includes the removal of soil. Materials healthier by mining include base metals, precious metals, iron, uranium, coal, diamonds, limestone, oil


Lignite (25%-35% carbon): Also referred to as brown coal, is the lowest rank of coal and used almost exclusively as fuel for electricity power generation. Sub-bituminous coal (35%-45% carbon): Properties range from those of lignite to those of bituminous coal. It is used primarily as fuel for electricity power generation. This coal generally

Coal Mining Effects on the Environment

Deforestation is required to clear areas of land and mountains to prepare them for mining. Coal mining releases toxic materials into the soil and water. Bad mining can start coal fires which can burn for decades – releasing "fly ash" and smoke filled with greenhouse gases and toxic chemicals.

Tata Steel's Sustainable Mining Practices

• Raw Materials Value Chain: The mining of chrome and manganese ore to production and sale of ferro-alloys minerals. • Other Businesses: Such as equipment manufacturing, bearings and agricultural equipment manufacturing. Tata Steel has captive coal mines at Jharia West Bokaro, in the state of Jharkhand, located within 200 km from

Bank of America Coal Policy

Bank of America plays a continued role in promoting the responsible use of coal and other energy sources, while For coal mining companies operating in the U.S., our due diligence includes review of client compliance with laws, regulations, species protection, wetland protection, hazardous materials, reclamation and remediation, as well

Coal Mining News

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Glossary of Mining Terminology

Coke - A combustible material consisting of the fused coal ash and fixed carbon of bituminous coal, produced by driving off the coal's volatile matter. Coking Coal - A bituminous coal containing 80-90% carbon and that is suitable for the production of coke. Collier - An underground workman in a coal mine - a coal transporting ship.

Rock Dusting Considerations in Underground Coal Mines

(Combustible Materials and Rock Dusting) requires the use of rock dust in bituminous coal mines (30 CFR 75.402) to abate the hazard of accumulated coal dust. Regulations state rock dust shall be distributed upon the top, floor, and sides of all underground areas of a coal mine in such

Commonly used mining techniques to extract coal

Jan 25, 2018Contour strip mining and area strip mining are the two forms of strip mining, which is often used to extract coal and lignite. In contour strip mining, bulldozers or power shovels are deployed to take away huge amounts of ground material in terraced strips for extracting coal from a seam on a hill.

How is Steel Produced?

Coking coal must also have low sulphur and phosphorous contents. Almost all metallurgical coal is used in coke ovens. The coking process consists of heating coking coal to around 1000-1100C in the absence of oxygen to drive off the volatile compounds (pyrolysis). This process results in a hard porous material


Abraham Evans (Cwmgorse) 1928-1985 Lecture notes of courses at Neath Intermediate School and Swansea Municipal Technical College 1928-1935; note-books of assorted jottings and technical notes on coal workings, mining equipment, etc., 1969 and undated (c1935); material concerning Cwmgorse Colliery 1956-1963; National Coal Board publication on

2 Overview of Technology and Mining

The most common mining methods used by surface coal mines are open pits with shovel-and-truck teams and opencast mines with large draglines. In underground coal mining, the most common methods are mechanical excavation with continuous miners and longwall shearers.


Many references to coal mining in England and Scotland and on the European continent began to appear in the writings of the 13th century. Coal was, however, used only on a limited scale until the early 18th century, when Abraham Darby of England and others developed methods of using in blast furnaces and forges coke made from coal.

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