# Relationship history for MSHA mine 4300751

Current hierarchy: **Town Of Dummerston-VT → Town of Dummerston → Dummerston Putney 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Town Of Dummerston-VT → Dummerston Putney Gravel Pit; 1990-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Town of Dummerston → Dummerston Putney Gravel Pit; 2013-07-26 to 2014-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Dummerston-VT → Town of Dummerston; 2013-07-26 to 2014-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Renaud Gravel Inc → Dummerston Putney Gravel Pit; 2014-10-20 to 2019-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Michael J  Renaud → Dummerston Putney Gravel Pit; 2014-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael J  Renaud → Renaud Gravel Inc; 2014-10-20 to 2019-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Town of Dummerston → Dummerston Putney Gravel Pit; 2019-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Dummerston-VT → Town of Dummerston; 2019-10-01 to current/open; source msha-controller-operator-history