# Relationship history for MSHA mine 4600731

Current hierarchy: **Addair Glenn A → Energy Sales 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Trace Fork Coal Company → No 1; 1950-01-01 to 1983-08-09; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Trace Fork Coal Company; 1950-01-01 to 1983-08-09; source msha-controller-operator-history
- **operator_operates_mine:** Freeport Mining Company Inc → No 1; 1983-08-10 to 1985-11-24; source msha-controller-operator-history
- **controller_controls_mine:** Herbert D  Roberts → No 1; 1983-08-10 to 1985-11-24; source msha-controller-operator-history
- **controller_controls_operator:** Herbert D  Roberts → Freeport Mining Company Inc; 1983-08-10 to 1985-11-24; source msha-controller-operator-history
- **controller_controls_mine:** Addair Glenn A → No 1; 1985-08-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Clover Mining Inc Of West Virginia → No 1; 1985-11-25 to 1987-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Joyce James L → No 1; 1985-11-25 to 1987-12-06; source msha-controller-operator-history
- **controller_controls_operator:** Joyce James L → Clover Mining Inc Of West Virginia; 1985-11-25 to 1987-12-06; source msha-controller-operator-history
- **operator_operates_mine:** Clover Mining Inc Of Wv → No 1; 1987-12-07 to 1990-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Larry A  Lough et al → No 1; 1987-12-07 to 1990-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Larry A  Lough et al → Clover Mining Inc Of Wv; 1987-12-07 to 1990-03-21; source msha-controller-operator-history
- **operator_operates_mine:** Energy Sales Inc → No 1; 1990-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Addair Glenn A → Energy Sales Inc; 1990-03-22 to current/open; source msha-controller-operator-history