# Relationship history for MSHA mine 1512977

Current hierarchy: **Stevens Bob & Lloyd A Justice → King James Coal Company Inc → No 5-A**

- 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:** Curtis  Francis → No 5-A; 1971-11-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** General Exploration Company → No 5-A; 1978-04-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lizann Mining Corp → No 5-A; 1981-07-01 to 1982-05-12; source msha-controller-operator-history
- **controller_controls_operator:** General Exploration Company → Lizann Mining Corp; 1981-07-01 to 1982-05-12; source msha-controller-operator-history
- **operator_operates_mine:** Big Hill Coal Company → No 5-A; 1982-05-13 to 1983-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Curtis  Francis → Big Hill Coal Company; 1982-05-13 to 1983-09-15; source msha-controller-operator-history
- **operator_operates_mine:** King James Coal Company Inc → No 5-A; 1983-09-16 to 1984-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Greene Nola & Sherman → No 5-A; 1983-09-16 to 1984-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Greene Nola & Sherman → King James Coal Company Inc; 1983-09-16 to 1984-04-01; source msha-controller-operator-history
- **operator_operates_mine:** King James Coal Company Inc → No 5-A; 1984-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stevens Bob & Lloyd A Justice → No 5-A; 1984-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stevens Bob & Lloyd A Justice → King James Coal Company Inc; 1984-04-02 to current/open; source msha-controller-operator-history