1. coal miner – someone who works in a coal mine. collier, pitman.
What is a coal miner?
Overview. Coal miners extract coal from surface mines and underground mines. To do this, they operate complex and expensive machinery that drills, cuts, scrapes, or shovels earth and coal so that the fuel can be collected.
What is the top of a coal mine called?
Anthracite – A hard, black coal containing a high percentage of fixed carbon and a low percentage of volatile matter. Anticline – An arch or fold in layers of rock shaped like the crest of a wave. Apex – The top or terminal edge of a vein on surface or its nearest point to the surface.
What is a seam in a mine called?
: a bed of coal usually thick enough to be profitably mined.
Are there still coal miners?
In the US, coal mining is a shrinking industry. In 1923, there were about 883,000 coal miners; today there are about 53,000. Working in coal mines is dangerous — miners have to deal with toxic gases, plus the threat of being crushed, drowned, or injured from fires and explosions.
How long do coal miners work?
The miners usually work long shifts of 10 to 14 consecutive days, with some days off between shifts. The remote location of the mining operations requires some miners to remain in the mining camp for months before going back home. A typical 12-hour shift might also be hard to stand especially underground.
Are mines hot or cold?
The rock is so hot underground that ice has to be pumped down to cool the tunnels. Because temperatures increase the closer we get to the earth’s core, the rock faces in the mine can get as hot as 140º F. “You can imagine what it’s like to crawl into a cavity there,” Hart said to NPR.
How deep do coal mines go?
Coal that occurs at depths of 55 to 90 m (180 to 300 ft) are usually deep mined, but in some cases surface mining techniques can be used. For example, some western U.S. coal that occur at depths in excess of 60 m (200 ft) are mined by the open pit methods, due to thickness of the seam 20–25 metres (60–90 feet).
What are the 4 types of mining?
There are four main methods of mining: underground, surface, placer and in-situ. The type of mining method used depends on the kind of resource that is being targeted for extraction, the deposit’s location below or on the Earth’s surface and the capacity of each method to profitably extract the resource.
Why is a mine called a mine?
A mine is an explosive placed underground or underwater that explodes when disturbed, or when remotely triggered. The term originated from the use of mining to go under the enemy’s city walls.
What does sinking a pit mean?
Shaft mining or shaft sinking is excavating a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom. … Historically mine shaft sinking has been among the most dangerous of all the mining occupations and the preserve of mining contractors called sinkers.
What is a pit deputy?
He can be compared to a supervisor, he was responsible for an area of the pit underground. He would walk the roadways (tunnels to non mining folk) and crawl along the coal face where men were working.
What is a drift coal mine?
Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. … Drift is a more general mining term, meaning a near-horizontal passageway in a mine, following the bed (of coal, for instance) or vein of ore.
Do coal miners still get black lung?
After Congress passed the Federal Coal Mine Health and Safety Act in 1969, which made the elimination of black lung a national goal, coal workers’ pneumoconiosis dropped to historically low rates by the 1990s.
How many years of coal is left in the US?
Based on U.S. coal production in 2019, of about 0.706 billion short tons, the recoverable coal reserves would last about 357 years, and recoverable reserves at producing mines would last about 20 years. The actual number of years that those reserves will last depends on changes in production and reserves estimates.
What state produces the most coal?