# Relationship history for MSHA mine 3608725

Current hierarchy: **J Clifford  Forrest III → Rosebud Mining Company → Beaver Valley**

- 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

- **controller_controls_mine:** J Clifford  Forrest III → Beaver Valley; 1979-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Forest Coal Company → Beaver Valley; 1989-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Spring Coal Co. → Beaver Valley; 1998-03-01 to 2003-08-24; source msha-controller-operator-history
- **controller_controls_operator:** Forest Coal Company → Mountain Spring Coal Co.; 1998-03-01 to 2003-08-24; source msha-controller-operator-history
- **operator_operates_mine:** Rosebud Mining Company → Beaver Valley; 2003-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Clifford  Forrest III → Rosebud Mining Company; 2003-08-25 to current/open; source msha-controller-operator-history