# Relationship history for MSHA mine 1508209

Current hierarchy: **General Exploration Company → Lizann Mining Corp → No 1 Glenna Sue (D)**

- 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:** Bevins Willie → No 1 Glenna Sue (D); 1974-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reynolds Billy Joe--P J Hurley & Charles Dixon → No 1 Glenna Sue (D); 1974-05-13 to 1975-08-20; source msha-controller-operator-history
- **operator_operates_mine:** Right Fork Fuel Company Inc → No 1 Glenna Sue (D); 1975-04-09 to 1975-08-20; source msha-controller-operator-history
- **controller_controls_operator:** Reynolds Billy Joe--P J Hurley & Charles Dixon → Right Fork Fuel Company Inc; 1975-04-09 to 1975-08-20; source msha-controller-operator-history
- **operator_operates_mine:** Right Fork Fuel Company Inc → No 1 Glenna Sue (D); 1975-08-21 to 1976-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Whitten Keith R → No 1 Glenna Sue (D); 1975-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whitten Keith R → Right Fork Fuel Company Inc; 1975-08-21 to 1976-06-28; source msha-controller-operator-history
- **operator_operates_mine:** Big Lump Coal Company → No 1 Glenna Sue (D); 1976-06-29 to 1977-09-12; source msha-controller-operator-history
- **controller_controls_operator:** Bevins Willie → Big Lump Coal Company; 1976-06-29 to 1977-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Preece Homer & George → No 1 Glenna Sue (D); 1977-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Preece Enterprises Inc → No 1 Glenna Sue (D); 1977-09-13 to 1978-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Preece Homer & George → Preece Enterprises Inc; 1977-09-13 to 1978-04-16; source msha-controller-operator-history
- **operator_operates_mine:** Lizann Mining Corp → No 1 Glenna Sue (D); 1978-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** General Exploration Company → No 1 Glenna Sue (D); 1978-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** General Exploration Company → Lizann Mining Corp; 1978-04-17 to current/open; source msha-controller-operator-history