# Relationship history for MSHA mine 0405858

Current hierarchy: **Ray D  Wilcox → G.R. Wilcox Enterprises Inc → Baker Creek Quarry**

- 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:** G.R. Wilcox Enterprises Inc → Baker Creek Quarry; 2012-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ray D  Wilcox → Baker Creek Quarry; 2012-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray D  Wilcox → G.R. Wilcox Enterprises Inc; 2012-11-07 to current/open; source msha-controller-operator-history