# Relationship history for MSHA mine 1700030

Current hierarchy: **Moores Hadley-James W Dewever & James Watkins → Shoals Corp → York Stone Company 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:** Shoals Corp → York Stone Company Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Moores Hadley-James W Dewever & James Watkins → York Stone Company Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moores Hadley-James W Dewever & James Watkins → Shoals Corp; 1950-01-01 to current/open; source msha-controller-operator-history