# Relationship history for MSHA mine 4606354

Current hierarchy: **Beavers Robert G → Buck Run Inc → No 1**

- 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:** Buck Run Mining → No 1; 1981-07-01 to 1984-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Rhoades Fermen L → No 1; 1981-07-01 to 1984-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Rhoades Fermen L → Buck Run Mining; 1981-07-01 to 1984-12-01; source msha-controller-operator-history
- **operator_operates_mine:** Buck Run Inc → No 1; 1984-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Beavers Robert G → No 1; 1984-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beavers Robert G → Buck Run Inc; 1984-12-02 to current/open; source msha-controller-operator-history