# Relationship history for MSHA mine 1512171

Current hierarchy: **Reading & Bates Corp → Golden Oak Mining Company Inc → Indian Creek No 6 Deep**

- 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:** Paul J  Sturgill → Indian Creek No 6 Deep; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Golden Oak Mining Company Inc → Indian Creek No 6 Deep; 1979-12-01 to 1980-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Paul J  Sturgill → Golden Oak Mining Company Inc; 1979-12-01 to 1980-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Golden Oak Mining Company Inc → Indian Creek No 6 Deep; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reading & Bates Corp → Indian Creek No 6 Deep; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reading & Bates Corp → Golden Oak Mining Company Inc; 1981-01-01 to current/open; source msha-controller-operator-history