Montana Code Annotated 2019

TITLE 82. MINERALS, OIL, AND GAS

CHAPTER 4. RECLAMATION

Part 3. Metal Mine Reclamation

Cyanide Heap And Vat Leach Open-Pit Gold And Silver Mining Prohibited

82-4-390. Cyanide heap and vat leach open-pit gold and silver mining prohibited. (1) Open-pit mining for gold or silver using heap leaching or vat leaching with cyanide ore-processing reagents is prohibited except as described in subsection (2).

(2) A mine described in this section operating on November 3, 1998, may continue operating under its existing operating permit or any amended permit that is necessary for the continued operation of the mine.

History: En. Sec. 1, I.M. No. 137, approved Nov. 3, 1998; amd. Sec. 1, Ch. 457, L. 1999.