Geologic sections of Quincy mine, T. 55 N., R. 34 W., Houghton County, Mich.

Lignende værker

• Geologic sections in TPS. 54 and 55 N., R. 34 W.
  af: Estados Unidos Geological Survey
  Udgivet: ([19--])
• Geologic sections in TPS, 55 and 56 N., R 33 W.
  af: Estados Unidos Geological Survey
  Udgivet: ([19--])
• Geologic sections in T. 53 N., R. 35 W., and T. 54 N., R. 34 W.
  af: Estados Unidos Geological Survey
  Udgivet: ([19--])
• Sections showing development along fissures from Ahmeek mine to Pennsylvania mine, Keweenaw counyy, Mich.
  af: Estados Unidos Geological Survey
  Udgivet: ([19--])
• Geologic sections of Elm river mine (contact copper co.), T. 52 N., R. 36 W.
  af: Estados Unidos Geological Survey
  Udgivet: ([19--])