# Relationship history for MSHA mine 3606762

Current hierarchy: **Maney Richard L → R L Maney Coal Company → Maney**

- 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:** R L Maney Coal Company → Maney; 1978-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Maney Richard L → Maney; 1978-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maney Richard L → R L Maney Coal Company; 1978-11-01 to current/open; source msha-controller-operator-history