ID H0141

Expands Chapter 15, Title 47 (formerly "Surface Mining") to cover both surface and underground mining operations through updated terminology and definitions.

Replaces "performance bond" language throughout with "financial assurance," allowing multiple forms including surety bonds, letters of credit, certificates of deposit, trust funds, and corporate guarantees.

Extends reclamation requirements to underground mines with a significant change threshold (50% increase in disturbed land area) effective July 1, 2019, with grandfather provisions for existing operations.

Establishes periodic review requirements for reclamation and permanent closure plans every five years when material changes occur, with board authority to adjust financial assurance amounts accordingly.

Creates surface mining reclamation fund and cyanidation facility closure fund to receive recovered civil penalties and forfeitures for reclamation and closure activities.