# Relationship history for MSHA mine 1516238

Current hierarchy: **Brent  Coleman → Brushy Contracting Inc → #2**

- 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

- **controller_controls_mine:** Brent  Coleman et al → #2; 1985-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brushy Contracting Inc → #2; 1987-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brent  Coleman et al → Brushy Contracting Inc; 1987-11-01 to current/open; source msha-controller-operator-history