# Relationship history for MSHA mine 3606490

Current hierarchy: **Rearick Leland D → L D Rearick Corp → Mc Collim 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** L D Rearick Corp → Mc Collim Mine; 1977-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rearick Leland D → Mc Collim Mine; 1977-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rearick Leland D → L D Rearick Corp; 1977-09-01 to current/open; source msha-controller-operator-history