# Relationship history for MSHA mine 4801810

Current hierarchy: **Wes  Lee → Lee Sand and Gravel, Inc → 2003 BL Pegson 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Lee Sand and Gravel, Inc → 2003 BL Pegson Crusher; 2018-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wes  Lee → 2003 BL Pegson Crusher; 2018-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wes  Lee → Lee Sand and Gravel, Inc; 2018-04-05 to current/open; source msha-controller-operator-history