Coal is also mined by underground mining, but only a portion of the coal present can be removed (holds up the roof). Coal is also mined by high wall or long wall mining, and by using large diameter augers to dig laterally into exposed seams.
the answer is coal
the answer is coal
Coal
Coal is obtained through mining. It is typically extracted from underground mines using various methods such as longwall mining or room and pillar mining. Once the coal is extracted, it is processed and prepared for use as a source of energy.
Coal is obtained through mining. It is typically found underground in coal mines and can be extracted through surface mining or underground mining methods. The process of coal mining involves the removal of coal from the earth's crust for various industrial purposes such as electricity generation and steel production.
There are five main types of coal mining; shaft, strip, slope, surface, and draft.
Strip mining has long been associated with coal mines, has sometimes been used for copper and gold mines, and is currently in use for mining the Athabasca Tar Sands.
coal
coal
coal
When coal is removed in strips, it is called strip mining. This method involves removing strips of soil and rock to expose coal seams, which can then be extracted using heavy machinery. Strip mining is commonly used for coal mining in areas where the coal seams are close to the surface.
Luis A. Fuste has written: 'Effects of coal strip mining on stream water quality and biology, southwestern Washington' -- subject(s): Coal mines and mining, Environmental aspects, Environmental aspects of Coal mines and mining, Environmental aspects of Strip mining, Strip mining, Water quality, Water quality bioassay