Home >  Term: deep coal
deep coal

Eng. Coal seams lying at a depth of 1,800 ft (549 m) or more below the surface.

0 0

ผู้สร้าง

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 points
  • 100% positive feedback
© 2024 CSOFT International, Ltd.