# Relationship history for MSHA mine 3002583

Current hierarchy: **George  Williams → Elizaville Sand & Gravel Inc → ELIZAVILLE SAND & GRAVEL, INC.**

- 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

- **operator_operates_mine:** Elizaville Sand & Gravel Inc → ELIZAVILLE SAND & GRAVEL, INC.; 1981-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George  Williams → ELIZAVILLE SAND & GRAVEL, INC.; 1981-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Williams → Elizaville Sand & Gravel Inc; 1981-04-01 to current/open; source msha-controller-operator-history