# Relationship history for MSHA mine 1512404

Current hierarchy: **Ousley Willis → V W Coals Inc → No 2**

- 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:** Gala Enterprises Inc → No 2; 1980-06-01 to 1984-04-17; source msha-controller-operator-history
- **controller_controls_mine:** Vaughn Estille & Dennis R Caldwell → No 2; 1980-06-01 to 1984-04-17; source msha-controller-operator-history
- **controller_controls_operator:** Vaughn Estille & Dennis R Caldwell → Gala Enterprises Inc; 1980-06-01 to 1984-04-17; source msha-controller-operator-history
- **operator_operates_mine:** Samoyed Elkhorn Coal Corp → No 2; 1984-04-18 to 1985-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Marenko Clifford → No 2; 1984-04-18 to 1985-05-21; source msha-controller-operator-history
- **controller_controls_operator:** Marenko Clifford → Samoyed Elkhorn Coal Corp; 1984-04-18 to 1985-05-21; source msha-controller-operator-history
- **operator_operates_mine:** H B & T Coal Inc → No 2; 1985-05-22 to 1986-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Harold → No 2; 1985-05-22 to 1986-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Harold → H B & T Coal Inc; 1985-05-22 to 1986-08-03; source msha-controller-operator-history
- **operator_operates_mine:** C S & R Coal Company Inc → No 2; 1986-08-04 to 1987-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Clyde  Boyd → No 2; 1986-08-04 to 1987-05-21; source msha-controller-operator-history
- **controller_controls_operator:** Clyde  Boyd → C S & R Coal Company Inc; 1986-08-04 to 1987-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Ousley Willis → No 2; 1987-04-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** V W Coals Inc → No 2; 1987-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ousley Willis → V W Coals Inc; 1987-05-22 to current/open; source msha-controller-operator-history