# Relationship history for MSHA mine 1510398

Current hierarchy: **Mc Eachern Pete → Rail Coal Inc → Bailey Tipple**

- 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:** Interchange Coal Inc → Bailey Tipple; 1977-05-01 to 1979-06-27; source msha-controller-operator-history
- **controller_controls_mine:** Kelley Charles C Et Al → Bailey Tipple; 1977-05-01 to 1979-06-27; source msha-controller-operator-history
- **controller_controls_operator:** Kelley Charles C Et Al → Interchange Coal Inc; 1977-05-01 to 1979-06-27; source msha-controller-operator-history
- **operator_operates_mine:** Clair Brothers Inc → Bailey Tipple; 1979-06-28 to 1979-09-13; source msha-controller-operator-history
- **controller_controls_mine:** Hunt Larry H Enterprises Inc → Bailey Tipple; 1979-06-28 to 1979-09-13; source msha-controller-operator-history
- **controller_controls_operator:** Hunt Larry H Enterprises Inc → Clair Brothers Inc; 1979-06-28 to 1979-09-13; source msha-controller-operator-history
- **operator_operates_mine:** Rail Coal Inc → Bailey Tipple; 1979-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Eachern Pete → Bailey Tipple; 1979-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Eachern Pete → Rail Coal Inc; 1979-09-14 to current/open; source msha-controller-operator-history