# Relationship history for MSHA mine 0202909

Current hierarchy: **Rusty  Wright → Rusty Wright Enterprise → Alpine Dump Pit B**

- 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

- **operator_operates_mine:** Rusty Wright Enterprise → Alpine Dump Pit B; 2000-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rusty  Wright → Alpine Dump Pit B; 2000-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rusty  Wright → Rusty Wright Enterprise; 2000-11-01 to current/open; source msha-controller-operator-history