# Relationship history for MSHA mine 1508676

Current hierarchy: **James L  Bevins → Bevins Coal Company 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

- **controller_controls_mine:** Nick A  Cooley et al → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hunts Branch Coal Company Inc → No 1; 1975-08-19 to 1984-02-02; source msha-controller-operator-history
- **controller_controls_operator:** Nick A  Cooley et al → Hunts Branch Coal Company Inc; 1975-08-19 to 1984-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Bevins Coal Company Inc → No 1; 1984-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James L  Bevins → No 1; 1984-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James L  Bevins → Bevins Coal Company Inc; 1984-02-03 to current/open; source msha-controller-operator-history