# Relationship history for MSHA mine 2003371

Current hierarchy: **Jerald W  Bailey → Bailey Sand & Gravel → Eagle 1000 Crusher**

- 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:** Jerald W  Bailey → Eagle 1000 Crusher; 1997-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bailey Sand & Gravel → Eagle 1000 Crusher; 2006-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerald W  Bailey → Bailey Sand & Gravel; 2006-07-20 to current/open; source msha-controller-operator-history