# Relationship history for MSHA mine 1506229

Current hierarchy: **Williams Ireland → W & A Coal Sales Inc → No 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Tripple W Fuel Inc → No 3; 1950-01-01 to 1989-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Witten Robert W → No 3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Witten Robert W → Tripple W Fuel Inc; 1950-01-01 to 1989-11-29; source msha-controller-operator-history
- **operator_operates_mine:** Big Daddy Mining Inc → No 3; 1989-11-30 to 1991-11-16; source msha-controller-operator-history
- **controller_controls_mine:** Belden Joe → No 3; 1989-11-30 to 1991-11-16; source msha-controller-operator-history
- **controller_controls_operator:** Belden Joe → Big Daddy Mining Inc; 1989-11-30 to 1991-11-16; source msha-controller-operator-history
- **controller_controls_mine:** Williams Ireland → No 3; 1991-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carter County Coal Company Inc → No 3; 1991-11-17 to 1992-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Estil → No 3; 1991-11-17 to 1992-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Estil → Carter County Coal Company Inc; 1991-11-17 to 1992-07-09; source msha-controller-operator-history
- **operator_operates_mine:** W & A Coal Sales Inc → No 3; 1992-07-10 to 1992-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Williams Ireland → W & A Coal Sales Inc; 1992-07-10 to 1992-10-19; source msha-controller-operator-history
- **operator_operates_mine:** M & G Transportation & Coal Sales Inc → No 3; 1992-10-20 to 1992-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Meral  Williams et al → No 3; 1992-10-20 to 1992-10-20; source msha-controller-operator-history
- **controller_controls_operator:** Meral  Williams et al → M & G Transportation & Coal Sales Inc; 1992-10-20 to 1992-10-20; source msha-controller-operator-history
- **operator_operates_mine:** W & A Coal Sales Inc → No 3; 1992-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Williams Ireland → W & A Coal Sales Inc; 1992-10-21 to current/open; source msha-controller-operator-history