Подземная добыча угля | Экстремальный процесс добычи угля

Coal is a natural resource formed from organic deposits from dead plants and buried in the ground for millions of years. Coal is one of the most abundant types of fossil fuels in the world. Underground coal mining is a method of extracting coal that is carried out below the ground surface

1. underground coal mining

2. loading coal barges

3. unload coal from the ship
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Mining & Energy Union
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PT DHARMA SUBUR SATYA
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Bruks Siwertell
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