# Relationship history for MSHA mine 1513245

Current hierarchy: **Bingham Arnold B → Brushy Fork Coal Company Inc → Mine 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:** Gilliam Berto → Mine No 1; 1976-09-30 to 1982-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Brushy Fork Coal Company Inc → Mine No 1; 1981-10-01 to 1982-05-06; source msha-controller-operator-history
- **controller_controls_operator:** Gilliam Berto → Brushy Fork Coal Company Inc; 1981-10-01 to 1982-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Brushy Fork Coal Company Inc → Mine No 1; 1982-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bingham Arnold B → Mine No 1; 1982-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bingham Arnold B → Brushy Fork Coal Company Inc; 1982-05-07 to current/open; source msha-controller-operator-history