Keystone coal industry manual

समान संसाधन

• Coal age operating handbook of underground mining /
  प्रकाशित: (1977)
• Coal age second operating handbook of underground mining /
  प्रकाशित: (1980)
• Coal mine directory : United States and Canada.
  प्रकाशित: (1989)
• How to conduct a mine feasibility study : surface coal mines /
  द्वारा: Seiffert, Sidney G.
  प्रकाशित: (1988)
• A manual on mines,rescue,saftey and gas detection /
  द्वारा: Strang, J.
  प्रकाशित: (1985)