A common form of extracting gold from rock used in Australia and North America is
a. power flushing
b. cyanide heap leaching
c. sulfuric acid leaching
d. hydraulic scouring
e. yellow-cake extraction
Answer: B
A common form of extracting gold from rock used in Australia and North America is
a. power flushing
b. cyanide heap leaching
c. sulfuric acid leaching
d. hydraulic scouring
e. yellow-cake extraction
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