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Mining accident
A mining accident is an accident that occurs during the process of mining minerals. Thousands of miners die from mining accidents each year, especially in the processes of coal mining and hard rock mining. Most of the deaths these days occur in developing countries, especially China, and rural parts of developed countries.
Mining accidents can have a variety of causes, including leaks of poisonous gases such as hydrogen sulfide〔Kucuker H. "Occupational fatalities among coal mine workers in Zonguldak, Turkey, 1994–2003". ''Occup Med (Lond)'' 2006 Mar;56(2):144-6. PMID 16490795〕 or explosive natural gases, especially firedamp or methane,〔Terazawa K, Takatori T, Tomii S, Nakano K. ''Methane asphyxia. Coal mine accident investigation of distribution of gas.'' ''Am J Forensic Med Pathol.'' 1985 Sep;6(3):211-4. PMID 3870672〕 dust explosions, collapsing of mine stopes, mining-induced seismicity, flooding, or general mechanical errors from improperly used or malfunctioning mining equipment (such as safety lamps or electrical equipment). Use of improper explosives underground can also cause methane and coal dust explosions.
==Worst mining disaster in history==
On April 26, 1942 in the Benxihu (Honkeiko) Colliery (coal mine), what is believed to have been the world's worst mining disaster took place, killing 1,549 miners. The disaster occurred in an area that is now within the bounds of modern-day China, but was then in a portion of China occupied by the Japanese, just north of present-day Korea. The Japanese administrators of the mine had the actual mining work performed by forced Chinese labor under harsh conditions. The disaster first began with a mine fire, but at the time, a hasty decision was made by the Japanese mine operators to promptly cut off the ventilation and to completely seal off the mine to kill the fire. This reportedly left many unevacuated workers still alive within the sealed-off area of the mine to eventually also suffocate. Once the fire was put out in this manner and the mine re-opened, it took 10 days to remove all of the bodies.〔(【引用サイトリンク】title=The world's worst coal mining disasters )〕 Of those killed, 1,518 were Chinese, and 31 were Japanese. Afterwards, several bodies were buried in a mass grave. According to a follow-up investigation carried out by the Soviet Union, the majority of the fatalities were not caused by the initial fire, but instead were the result of secondary carbon monoxide poisoning and suffocation.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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