Allow correction of minor maintenance items at mines

This bill allows Montana mine operators to correct minor maintenance issues without facing immediate operational shutdowns. It creates a new "minor maintenance correction letter" process that gives permittees 30 days to fix violations that do not pose imminent safety risks or significant environmental harm. The bill clarifies that these minor issues do not require public hearings or cessation orders, streamlining the enforcement process for low-risk violations while maintaining stricter requirements for serious safety or environmental breaches.