# Relationship history for MSHA mine 2902253

Current hierarchy: **Dustin James  Pettingill → Restoration Group, Inc. → Ewing 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Pettingill Enterprises Inc. → Ewing Pit; 2003-08-08 to 2014-06-08; source msha-controller-operator-history
- **controller_controls_mine:** Dave R  Pettingill → Ewing Pit; 2003-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dave R  Pettingill → Pettingill Enterprises Inc.; 2003-08-08 to 2014-06-08; source msha-controller-operator-history
- **operator_operates_mine:** DJ Sand & Gravel Inc. → Ewing Pit; 2014-06-09 to 2017-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Dustin James  Pettingill → Ewing Pit; 2014-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dustin James  Pettingill → DJ Sand & Gravel Inc.; 2014-06-09 to 2017-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Restoration Group, Inc. → Ewing Pit; 2017-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dustin James  Pettingill → Ewing Pit; 2017-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dustin James  Pettingill → Restoration Group, Inc.; 2017-03-09 to current/open; source msha-controller-operator-history