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In Situ Leaching Research in a Copper Deposit at the Emerald Isle Mine.


PB271904

Publication Date 1977
Personal Author D'Andrea, D. V.; Larson, W. C.; Fletcher, L. R.; Chamberlain, P. G.; Engelmann, W. C.
Page Count 48
Abstract The Bureau of Mines and El Paso Mining and Milling Company conducted a cooperative in situ leaching research program at the Emerald Isle mine near Kingman, Ariz. The objective of this research was to develop in situ leaching methods for 200,000 tons of ore exposed in the pit bottom and also 3,000,000 tons of ore under 200 feet of overburden adjacent to the pit. The research included core drilling for fragmentation analysis, in-place permeability testing, seismic surveys, blasting tests, blast vibration measurements, in-place leaching, and ground water monitoring. A 15,000-ton test area in the pit bottom was blasted and leached in place for 117 days. This successful test was followed by leaching of 100,000 additional tons of unblasted pit bottom ore. Two test blasts under 205 feet of overburden and extending to 290 feet were detonated in an area near the open pit. Based on the research completed, an expanded in situ leaching system was designed, but not implemented, to recover copper from a 1,500,000-ton area at the Emerald Isle mine.
Keywords
  • Solution mining
  • Copper ore deposits
  • Leaching
  • Mining engineering
  • Fragmentation
  • Blasting
  • Arizona
  • In situ liquefaction
  • Emerald Isle Mine
  • Kingman(Arizona)
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 48A - Mineral Industries
Corporate Authors Bureau of Mines, Twin Cities, Minn. Twin Cities Mining Research Center.
Document Type Technical Report
Title Note Rept. of investigations 1977.
NTIS Issue Number 197724
In Situ Leaching Research in a Copper Deposit at the Emerald Isle Mine.
In Situ Leaching Research in a Copper Deposit at the Emerald Isle Mine.
PB271904

  • Solution mining
  • Copper ore deposits
  • Leaching
  • Mining engineering
  • Fragmentation
  • Blasting
  • Arizona
  • In situ liquefaction
  • Emerald Isle Mine
  • Kingman(Arizona)
  • Bureau of Mines
  • 48A - Mineral Industries
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