# Relationship history for MSHA mine 1512090

Current hierarchy: **Poteet J W → Black Joe Coal Company Inc → Number One**

- 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:** Black Joe Coal Company Inc → Number One; 1979-10-01 to 1980-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Bradford Mike → Number One; 1979-10-01 to 1980-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Bradford Mike → Black Joe Coal Company Inc; 1979-10-01 to 1980-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Black Joe Coal Company Inc → Number One; 1981-01-01 to 1985-05-01; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Roy Dan → Number One; 1981-01-01 to 1985-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Roy Dan → Black Joe Coal Company Inc; 1981-01-01 to 1985-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Black Joe Coal Company Inc → Number One; 1985-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Poteet J W → Number One; 1985-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Poteet J W → Black Joe Coal Company Inc; 1985-05-02 to current/open; source msha-controller-operator-history