# Relationship history for MSHA mine 1502153

Current hierarchy: **Reading & Bates Corp → Golden Oak Mining Company Inc → Sandlick #3**

- 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:** Paul J  Sturgill → Sandlick #3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Elkhorn & Jellico Coal Company Inc → Sandlick #3; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Elkhorn & Jellico Coal Company Inc → Sandlick #3; 1970-02-01 to 1979-07-01; source msha-controller-operator-history
- **controller_controls_operator:** Elkhorn & Jellico Coal Company Inc → Elkhorn & Jellico Coal Company Inc; 1970-02-01 to 1979-07-01; source msha-controller-operator-history
- **operator_operates_mine:** Golden Oak Mining Company Inc → Sandlick #3; 1979-07-02 to 1980-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Paul J  Sturgill → Golden Oak Mining Company Inc; 1979-07-02 to 1980-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Golden Oak Mining Company Inc → Sandlick #3; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reading & Bates Corp → Sandlick #3; 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