Sealing openings in abandoned mines by pneumatic stowing

Lignende værker

• Building seals by pneumatic stowing in mine closure operations
  af: Maksimovic, S. D.
  Udgivet: (1982)
• Blind pneumatic stowing in voids in abandoned mines /
  af: Sands, Paul F.
  Udgivet: (1990)
• The precision of the moisture condition test /
  af: Parsons, A. W.
  Udgivet: (1987)
• Crushing techniques for pneumatic concentration of mica /
  af: Smith, C. W. (Carl W.)
  Udgivet: (1982)
• Inverted pyramid-shaped plugs for closing abandoned mine shafts : Galena, KS, demonstration project /
  af: Dressel, W. M. (Waldemar M.)
  Udgivet: (1985)