Gold
In-situ leaching has not been used on a commercial scale for gold mining. A three-year pilot program was undertaken in the 1970s to in-situ leach gold ore at the Ajax mine in the Cripple Creek district in the US, using a chloride and iodide solution. After obtaining poor results, perhaps because of the complex telluride ore, the test was halted.
Read more about this topic: In-situ Leach
Famous quotes containing the word gold:
“In the gold mouth of a flower
the black smell of spring earth.
No more skulls on our desks
but the pervasive
testing of death....”
—Denise Levertov (b. 1923)
“He said there was gold here. He lied. He is not perfect.”
—Robert Bolt (1924–1995)
“I am a lantern—
My head a moon
Of Japanese paper, my gold beaten skin
Infinitely delicate and infinitely expensive.”
—Sylvia Plath (1932–1963)