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Asian Gold reserves DB
Dizon gold mine(Philippines)
      paishanlou gold mine (china)
      gaolong gold mine (china)
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  Page 246
 
اولينقبليبعديآخرين
   Available subsurface data from exploratory drill holes and ground-water surveys conducted by Dizon Mines from 1978 to 1985 showed the thickness of the sediment fill within Mapanuepe valley to range from 20 m to more than 60 m, with a trend of gradually increasing thickness downstream towards its junction with the Marella. In some areas these sand-silt-clay horizons were more than 11 m thick. Similar fine-grained deposits were encountered at depths of 5 to 15 m from the surface during recent ground water well explorations by Dizon Mines in Pili and Mampaen, at sites 4 and 5 km upstream from Mapanuepe's junction with the Marella channel, after the June 15, 1991, eruption.

Upstream view of the lake of Dizon gold mine
    The open pit mine finally closed in 1997 after mining 110 million tonnes of ore and
   recovering 749 million pounds (341,388 tonnes) of copper, 3.2 million ounces of silver and 1.9 million ounces of gold (Benguet Consolidated Inc website). Closure was premature with ore remaining in the pit floor due to a wall collapse on the south-eastern portion of the pit. Following a site inspection of the Dizon Project and discussions with former geologists and metallurgist to the previous operations in February 2004.
  
 
 
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