In coal mining this is the intended basis for roof bolting. Bearing A surveying term used to designate direction. The bearing of a line is the acute horizontal angle between the meridian and the line. The meridian is an established line of reference.
Get Price
Strip mine An openpit mine, usually a coal mine, operated by removing overburden, excavating the coal seam, then returning the overburden. Subbituminous A black coal, intermediate between lignite and bituminous. Sublevel A level or working horizon in a mine between main working levels.
Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is a 39pit39, and
Coal mining, extraction of coal deposits from the surface of Earth and from underground. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th
Glossary of Mining Terminology After Damp Gasses resulting from underground combustion, normally carbon monoxide. This is a loose term implying any fatal gas in a mine after an explosion or fire. Air Shaft A vertical opening into a mine for the passage of air. Airway Any passage in a mine along which an air current moves. Some passages are
Mine has been developed to provide valuable information to students about the mine surveying profession. It is our intention to address the shortage of mine surveyors in Australia and encourage the involvement of school leavers and university students in the profession.
Surveying in the mining industry, both in openpit and underground mines, often goes hand in hand with terrestrial laser scanning TLS, which is deployed to verify the spatial changes of mining works. Thanks to its high point density and high accuracy, TLS is a very suitable surveying technique for monitoring movements and deformations.
The history of coal mining. It is the Ostrava region where archaeological evidence of coal utilization by prehistoric man was found. Perhaps it was the presence of this mineral that made him settle here and create an artistic gem of worldwide significance the Venus of Landek.. However, systematic mining and utilization of this raw material is much more recent even more recent than mining
We have included a basic mining dictionary which will provide a basic meaning to words used throughout the site as well as general terms used in mining and surveying, for the visitors who haven39t got any experience working in mines. Some of the terms have been linked to pages with further information. Auger A spiral shaped cutting head. These
In coal mining this is the intended basis for roof bolting. Bearing A surveying term used to designate direction. The bearing of a line is the acute horizontal angle between the meridian and the line. The meridian is an established line of reference.
The use and production of coal is on the decline, pressured by cheap natural gas and policies to promote cleaner sources of energy. In a recent article in The Regional Economist, Regional Economist Charles Gascon and Senior Research Associate Jonas Crews took a deeper look at the future of coal production as a source for both electricity and jobs in the U.S.
Glossary of Mining Terms Kentucky Coal Education. Azimuth A surveying term that references the angle measured clockwise from any Coal mine An area of land and all structures, facilities, machinery, tools,
Term for the pit head, where coal was sorted from dirt before washing. Shaft. A shaft is a vertical or nearvertical tunnel that gives access to a coal mine accommodating the cage and providing ventilation. Shotfirer. A shotfirer is a colliery underofficial qualified to detonate shots or explosive charges.
In coal mining this is the intended basis for roof bolting. Bearing A surveying term used to designate direction. The bearing of a line is the acute horizontal angle between the meridian and the line. The meridian is an established line of reference.
Standard Surveying Terms. A Frame A measuring device built in the shape of an A. The distance between the legs is 6.6 feet one tenth of a measure the acreage of a small square parcel, multiply the width and height in 34A39s34 and move the decimal point three places to the left.
Glossary of Mining Terms. Carboniferous Containing coal. Chilean Mill A machine, somewhat like the arastra, in which heavy stone wheels turn about a central shaft and crush ore. Chlorides A compound of chlorine and silver. A large chute at the Kennecott Copper Mine in Alaska. Click for prints amp products.
Coal mining is only a temporary use of land, so it is vital that rehabilitation of land takes place once mining operations have stopped. In best practice a detailed rehabilitation or reclamation plan is designed and approved for each coal mine, covering the period from the start of operations until well after mining has finished.
The negative effects of coal mining cannot be disputed Destruction of Landscapes and Habitats Strip mining also known as surface mining, involves the stripping away of earth and rocks to reach the coal underneath. If a mountain happens to be standing in the way of a coal seam within, it will be blasted or levelled effectively leaving a
4 99 Glossary of Mining Terms RPMGlobal 99 Glossary of Mining Terms RPMGlobal 5 Angle of Draw in coal mine subsidence, this angle is assumed to bisect the angle between the vertical and the angle of repose of the material and is 20 for flat seams. For dipping seams, the angle of break increases, being 35.8 from the vertical for a 40 dip.
BSurvey, Mining, Mapping Terms and Definitions Elliott Surveying New Mexico 5052806729 rusty. BLM Bureau of Land Management.. BM SURVEY Bench Mark.. BACK MINE the roof of a horizontal opening such as an adit, drift or crosscut.. BACK BEARING SURVEY The bearing at the opposite end of a line from the observer as measured from the true meridian at
A Glossary of the most common mining terms. Published at May 4, 2018, in Investor 101. Having trouble understanding mining terminology Heres a comprehensive AZ guide of mining terms you need to know if you are considering investing in the mining industry or are just curious about how mining works. Coking coal metallurgical coal A
