# Relationship history for MSHA mine 1505502

Current hierarchy: **Hall David G → Crab Coal Company Inc → No 7-C**

- 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:** Owens Victor → No 7-C; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coleman & Tabor Coal Company → No 7-C; 1950-01-01 to 1975-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Coleman & Tabor Coal Company → No 7-C; 1950-01-01 to 1975-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Coleman & Tabor Coal Company → Coleman & Tabor Coal Company; 1950-01-01 to 1975-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Gary D → No 7-C; 1972-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hunt James E → No 7-C; 1972-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shell Coal Company → No 7-C; 1975-02-12 to 1979-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Hunt James E → Shell Coal Company; 1975-02-12 to 1979-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Lois Coal Company → No 7-C; 1979-09-07 to 1981-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Wooten Bobby → No 7-C; 1979-09-07 to 1981-04-19; source msha-controller-operator-history
- **controller_controls_operator:** Wooten Bobby → Lois Coal Company; 1979-09-07 to 1981-04-19; source msha-controller-operator-history
- **operator_operates_mine:** Cooper Mining Company Inc → No 7-C; 1981-04-20 to 1982-08-08; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Gilbert A → No 7-C; 1981-04-20 to 1982-08-08; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Gilbert A → Cooper Mining Company Inc; 1981-04-20 to 1982-08-08; source msha-controller-operator-history
- **operator_operates_mine:** Star Dust Coal Company → No 7-C; 1982-08-09 to 1983-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Gary D → Star Dust Coal Company; 1982-08-09 to 1983-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Double O Coal Company → No 7-C; 1983-02-08 to 1983-08-08; source msha-controller-operator-history
- **controller_controls_operator:** Owens Victor → Double O Coal Company; 1983-02-08 to 1983-08-08; source msha-controller-operator-history
- **operator_operates_mine:** Katie Coal Company → No 7-C; 1983-08-09 to 1985-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Justice Lloyd Allen → No 7-C; 1983-08-09 to 1985-02-24; source msha-controller-operator-history
- **controller_controls_operator:** Justice Lloyd Allen → Katie Coal Company; 1983-08-09 to 1985-02-24; source msha-controller-operator-history
- **operator_operates_mine:** Crab Coal Company Inc → No 7-C; 1985-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hall David G → No 7-C; 1985-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hall David G → Crab Coal Company Inc; 1985-02-25 to current/open; source msha-controller-operator-history