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Omarlate Omarlate
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Posts: 500
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6 years ago
Gold is removed from the rock that contains it by a series of leaching operations that all involve the use of
 
  a. sulfuric acid
  b. nitric acid
  c. arsenic
  d. highly toxic cyanide salts
  e. mercury
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amelicox35amelicox35
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6 years ago
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Omarlate Author
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6 years ago
Good timing, thanks!
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Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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