Oil and gas wells

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No-entry mining methods??? ??????? ???
????(Sometimes called indirect mining)

• Oil and gas wells
• Auger mining of coal
• Gasification of underground coal
• The Frasch process for sulphur recovery
• Solution mining

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Degasification of underground coal????? ?????
??? ?????
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No-entry mining (e.g. solution mining)
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No-entry mining (e.g. solution mining)
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Future mining methods??? ??????? ??????????

• Ocean mining ????? ??????
• Deep sea nodules ????? ?????????? ?? ????? ??????
  ???????
• Asteroid mining ????? ?????? ?????????
• Robots ????? ??????? ?????

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