# Relationship history for MSHA mine 3303393

Current hierarchy: **J Clifford  Forrest III → Rosebud Mining Company → Carroll Pits**

- 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:** Keller Group Inc → Carroll Pits; 1950-01-01 to 2006-04-02; source msha-controller-operator-history
- **operator_operates_mine:** Buckeye Industrial Mining Co. → Carroll Pits; 1975-12-01 to 2010-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Keller Group Inc → Buckeye Industrial Mining Co.; 1975-12-01 to 2006-04-02; source msha-controller-operator-history
- **controller_controls_mine:** J Clifford  Forrest III → Carroll Pits; 1979-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Evergreen Energy Inc → Carroll Pits; 2006-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Evergreen Energy Inc → Buckeye Industrial Mining Co.; 2006-04-03 to 2010-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Rosebud Mining Company → Carroll Pits; 2010-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Clifford  Forrest III → Rosebud Mining Company; 2010-04-01 to current/open; source msha-controller-operator-history