# Relationship history for MSHA mine 4002747

Current hierarchy: **Maggard Carlos J → Weststar Coal Company Inc → Weststar Coal Co**

- 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:** Harris Johnny → Weststar Coal Co; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** H & W Coal Company → Weststar Coal Co; 1981-09-01 to 1985-10-06; source msha-controller-operator-history
- **controller_controls_operator:** Harris Johnny → H & W Coal Company; 1981-09-01 to 1985-10-06; source msha-controller-operator-history
- **operator_operates_mine:** S-J Coal Company → Weststar Coal Co; 1985-10-07 to 1985-11-24; source msha-controller-operator-history
- **controller_controls_mine:** Bunch James & Steve Harris → Weststar Coal Co; 1985-10-07 to 1985-11-24; source msha-controller-operator-history
- **controller_controls_operator:** Bunch James & Steve Harris → S-J Coal Company; 1985-10-07 to 1985-11-24; source msha-controller-operator-history
- **operator_operates_mine:** H & W Coal Company → Weststar Coal Co; 1985-11-25 to 1988-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Harris Johnny → H & W Coal Company; 1985-11-25 to 1988-03-17; source msha-controller-operator-history
- **operator_operates_mine:** S I M B A Coal Corp → Weststar Coal Co; 1988-03-18 to 1988-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Reeves Terry C → Weststar Coal Co; 1988-03-18 to 1988-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Reeves Terry C → S I M B A Coal Corp; 1988-03-18 to 1988-10-03; source msha-controller-operator-history
- **operator_operates_mine:** Weststar Coal Company Inc → Weststar Coal Co; 1988-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Maggard Carlos J → Weststar Coal Co; 1988-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maggard Carlos J → Weststar Coal Company Inc; 1988-10-04 to current/open; source msha-controller-operator-history