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There are no sources from the environmental section. — Preceding unsigned comment added by 174.63.38.120 ( talk) 14:57, 1 July 2013 (UTC) reply

• Not a complete sentence:

"This, in effect, requires that the key controllable variables, which have an effect on the recovery of the metal and the quality of solution coming from a dump leaching process" — Preceding unsigned comment added by 71.178.15.165 ( talk) 02:25, 15 August 2017 (UTC) reply