# Relationship history for MSHA mine 4607442

Current hierarchy: **Brewster Thomas → Toney'S Branch Coal Company → Crooked Run 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Brewster Thomas → Crooked Run No 3; 1980-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Coy Jeffrey S → Crooked Run No 3; 1987-02-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Supreme Energy Inc → Crooked Run No 3; 1988-01-01 to 1989-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Mc Coy Jeffrey S → Supreme Energy Inc; 1988-01-01 to 1989-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Toney'S Branch Coal Company → Crooked Run No 3; 1989-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brewster Thomas → Toney'S Branch Coal Company; 1989-08-29 to current/open; source msha-controller-operator-history