# Relationship history for MSHA mine 1510575

Current hierarchy: **Reading & Bates Corp → Golden Oak Mining Company Inc → Black Oak #1 Deep Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Collins Hoover & Buddy Sexton → Black Oak #1 Deep Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & H Coal Company → Black Oak #1 Deep Mine; 1977-07-01 to 1980-12-08; source msha-controller-operator-history
- **controller_controls_operator:** Collins Hoover & Buddy Sexton → B & H Coal Company; 1977-07-01 to 1980-12-08; source msha-controller-operator-history
- **operator_operates_mine:** Constellation Coal Company Inc → Black Oak #1 Deep Mine; 1980-12-09 to 1983-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Hall Thurman → Black Oak #1 Deep Mine; 1980-12-09 to 1983-09-12; source msha-controller-operator-history
- **controller_controls_operator:** Hall Thurman → Constellation Coal Company Inc; 1980-12-09 to 1983-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Reading & Bates Corp → Black Oak #1 Deep Mine; 1981-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Golden Oak Mining Company Inc → Black Oak #1 Deep Mine; 1983-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reading & Bates Corp → Golden Oak Mining Company Inc; 1983-09-13 to current/open; source msha-controller-operator-history