# Relationship history for MSHA mine 4605029

Current hierarchy: **Baker Daris → B & C Coal Company → No 2**

- 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:** Cline Donald Ray → No 2; 1975-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & C Coal Company → No 2; 1976-02-02 to 1977-05-26; source msha-controller-operator-history
- **controller_controls_operator:** Cline Donald Ray → B & C Coal Company; 1976-02-02 to 1977-05-26; source msha-controller-operator-history
- **operator_operates_mine:** B & C Coal Company → No 2; 1977-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Baker Daris → No 2; 1977-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Baker Daris → B & C Coal Company; 1977-05-27 to current/open; source msha-controller-operator-history