# Relationship history for MSHA mine 1513376

Current hierarchy: **Miller William Carl → W & D Coal Company Inc → No 1**

- 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:** Wells James H & Harrison Carter → No 1; 1980-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & W Coal Company → No 1; 1982-02-01 to 1984-01-24; source msha-controller-operator-history
- **controller_controls_operator:** Wells James H & Harrison Carter → C & W Coal Company; 1982-02-01 to 1984-01-24; source msha-controller-operator-history
- **operator_operates_mine:** Brush Creek Mining Company → No 1; 1984-01-25 to 1984-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Senters Harold M--Ronnie G Killion Et Al → No 1; 1984-01-25 to 1984-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Senters Harold M--Ronnie G Killion Et Al → Brush Creek Mining Company; 1984-01-25 to 1984-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Sadd Coal Company Inc → No 1; 1984-06-04 to 1985-02-20; source msha-controller-operator-history
- **controller_controls_mine:** Randal  Lawson → No 1; 1984-06-04 to 1985-02-20; source msha-controller-operator-history
- **controller_controls_operator:** Randal  Lawson → Sadd Coal Company Inc; 1984-06-04 to 1985-02-20; source msha-controller-operator-history
- **operator_operates_mine:** Sadd Coal Company Inc → No 1; 1985-02-21 to 1985-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Terry  McCreary et al → No 1; 1985-02-21 to 1985-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Terry  McCreary et al → Sadd Coal Company Inc; 1985-02-21 to 1985-03-17; source msha-controller-operator-history
- **operator_operates_mine:** W & D Coal Company Inc → No 1; 1985-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Miller William Carl → No 1; 1985-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miller William Carl → W & D Coal Company Inc; 1985-03-18 to current/open; source msha-controller-operator-history