Why is crushed limestone used in the remediation of sulfide waste rock?
A) The limestone forms a highly impermeable barrier.
B) The limestone neutralizes the acid that forms.
C) The limestone converts to marble and can be sold.
D) Native grasses and plants grow directly out of the limestone.
E) The sulfide waste rock will oxidize into limestone.

Question

Quizplus · Accepted Answer

Limestone is used in the remediation of sulfide waste rock because it neutralizes the acid that forms when sulfide minerals in the waste rock react with oxygen and water. This process helps to mitigate the environmental impact of acid mine drainage, which can harm aquatic life and contaminate water sources.

Why Is Crushed Limestone Used in the Remediation of Sulfide