# Relationship history for MSHA mine 3003721

Current hierarchy: **Roswell E  Beeman → ROSWELL BEEMAN TRUCKING → BEEMAN SCREENING PLANT**

- 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:** Roswell Beeman Trucking → BEEMAN SCREENING PLANT; 2009-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roswell E  Beeman → BEEMAN SCREENING PLANT; 2009-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roswell E  Beeman → Roswell Beeman Trucking; 2009-10-06 to current/open; source msha-controller-operator-history