Revise opencut notification laws

This bill revises Montana's opencut mining permit requirements to improve public notification and participation processes. It directly affects mining operators, landowners, and the Department of Environmental Quality by clarifying definitions and establishing new notification thresholds. Key provisions include redefining what constitutes an opencut operation, setting specific distance requirements for processing facilities and staging areas, and requiring permit applications to include detailed information when operations affect water resources or occur near 10 or more occupied dwelling units. The bill also grants rulemaking authority to the department and amends existing sections of the Montana Code Annotated to implement these changes.