# Relationship history for MSHA mine 1514498

Current hierarchy: **Les  Mayhorn; Kennith  Layne → M R C Coal Company Inc → No 1 (D)**

- 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:** Majestic Collieries Company → No 1 (D); 1984-03-01 to 1984-05-28; source msha-controller-operator-history
- **controller_controls_mine:** Inspiration Resources Corporation → No 1 (D); 1984-03-01 to 1984-05-28; source msha-controller-operator-history
- **controller_controls_operator:** Inspiration Resources Corporation → Majestic Collieries Company; 1984-03-01 to 1984-05-28; source msha-controller-operator-history
- **operator_operates_mine:** M R C Coal Company Inc → No 1 (D); 1984-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kennith  Layne et al → No 1 (D); 1984-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kennith  Layne et al → M R C Coal Company Inc; 1984-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Les  Mayhorn et al → M R C Coal Company Inc; 1984-05-29 to current/open; source msha-controller-operator-history