# Relationship history for MSHA mine 1508934

Current hierarchy: **Lewis Ira Joe → I J Coal Company Inc → #4 Processing Plant**

- 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 → #4 Processing Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** ITT Corporation → #4 Processing Plant; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Certicoals Inc → #4 Processing Plant; 1975-10-02 to 1980-08-19; source msha-controller-operator-history
- **controller_controls_operator:** ITT Corporation → Certicoals Inc; 1975-10-02 to 1980-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Guerra Lonzo → #4 Processing Plant; 1980-08-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Golden Oak Mining Company Inc → #4 Processing Plant; 1980-08-20 to 1981-02-01; source msha-controller-operator-history
- **controller_controls_operator:** Paul J  Sturgill → Golden Oak Mining Company Inc; 1980-08-20 to 1981-02-01; source msha-controller-operator-history
- **controller_controls_mine:** Reading & Bates Corp → #4 Processing Plant; 1981-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Golden Oak Mining Company Inc → #4 Processing Plant; 1981-02-02 to 1981-11-23; source msha-controller-operator-history
- **controller_controls_operator:** Reading & Bates Corp → Golden Oak Mining Company Inc; 1981-02-02 to 1981-11-23; source msha-controller-operator-history
- **operator_operates_mine:** Straight Fork Coal Company Inc → #4 Processing Plant; 1981-11-24 to 1982-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Guerra Lonzo → Straight Fork Coal Company Inc; 1981-11-24 to 1982-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Golden Oak Mining Company Inc → #4 Processing Plant; 1982-04-01 to 1984-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Reading & Bates Corp → Golden Oak Mining Company Inc; 1982-04-01 to 1984-09-11; source msha-controller-operator-history
- **operator_operates_mine:** I J Coal Company Inc → #4 Processing Plant; 1984-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lewis Ira Joe → #4 Processing Plant; 1984-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Ira Joe → I J Coal Company Inc; 1984-09-12 to current/open; source msha-controller-operator-history