# Relationship history for MSHA mine 2700383

Current hierarchy: **Jeffery W  Sutton → D.R.E. Sand & Gravel → D.R.E. Sand & Gravel**

- 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:** D.R.E. Sand & Gravel → D.R.E. Sand & Gravel; 2003-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery W  Sutton → D.R.E. Sand & Gravel; 2003-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery W  Sutton → D.R.E. Sand & Gravel; 2003-06-03 to current/open; source msha-controller-operator-history