# Relationship history for MSHA mine 1300704

Current hierarchy: **Larry E  Moore → Midwest Limestone Company Inc → Dorweiler Sand & Gravel Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Larry E  Moore → Dorweiler Sand & Gravel Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Midwest Limestone Company Inc → Dorweiler Sand & Gravel Pit; 1977-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry E  Moore → Midwest Limestone Company Inc; 1977-08-11 to current/open; source msha-controller-operator-history