# Relationship history for MSHA mine 3605277

Current hierarchy: **Jerry C  Bowman → Jerry C Bowman Coal Company → Donley Strip**

- 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:** W C Bowman → Donley Strip; 1950-01-01 to 1985-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Bowman W C → Donley Strip; 1950-01-01 to 1985-05-02; source msha-controller-operator-history
- **controller_controls_operator:** Bowman W C → W C Bowman; 1950-01-01 to 1985-05-02; source msha-controller-operator-history
- **operator_operates_mine:** Jerry C Bowman Coal Company → Donley Strip; 1985-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry C  Bowman → Donley Strip; 1985-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry C  Bowman → Jerry C Bowman Coal Company; 1985-05-03 to current/open; source msha-controller-operator-history