# Relationship history for MSHA mine 4300795

Current hierarchy: **Michael J  Renaud → Renaud Gravel, Inc. → Renaud Gravel, Inc. - Chester 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:** Michael J  Renaud → Renaud Gravel, Inc. - Chester Pit; 2014-10-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Renaud Gravel, Inc. → Renaud Gravel, Inc. - Chester Pit; 2019-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael J  Renaud → Renaud Gravel, Inc.; 2019-07-01 to current/open; source msha-controller-operator-history