# Relationship history for MSHA mine 4607940

Current hierarchy: **Edward A  Asbury → Raw Coal Mining Company Inc → No 9 Mine Load-Out (1)**

- 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:** Charles  Adkins → No 9 Mine Load-Out (1); 1989-06-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia-Tennessee Coal Sales Inc → No 9 Mine Load-Out (1); 1990-09-01 to 1992-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Adkins → West Virginia-Tennessee Coal Sales Inc; 1990-09-01 to 1992-04-21; source msha-controller-operator-history
- **operator_operates_mine:** Raw Coal Mining Company Inc → No 9 Mine Load-Out (1); 1992-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edward A  Asbury → No 9 Mine Load-Out (1); 1992-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward A  Asbury → Raw Coal Mining Company Inc; 1992-04-22 to current/open; source msha-controller-operator-history