# Relationship history for MSHA mine 1202046

Current hierarchy: **Beaumont Thomas → B & P Excavating Inc → Hays Mine**

- 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:** B & P Excavating Inc → Hays Mine; 1989-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Beaumont Thomas → Hays Mine; 1989-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beaumont Thomas → B & P Excavating Inc; 1989-01-01 to current/open; source msha-controller-operator-history