# Relationship history for MSHA mine 0405407

Current hierarchy: **MRLLC  Investors LTD → Mineral Resources LLC → Morris Ravine Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Mineral Resources LLC → Morris Ravine Mine; 2000-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** MRLLC  Investors LTD et al → Morris Ravine Mine; 2000-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MRLLC  Investors LTD et al → Mineral Resources LLC; 2000-01-01 to current/open; source msha-controller-operator-history