# Relationship history for MSHA mine 2902388

Current hierarchy: **Dorothy  Allred → Native Sun Materials Inc → Native Sun Materials/Elkins 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:** Jeff E  Fegert → Native Sun Materials/Elkins Pit; 1987-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Target Construction Inc → Native Sun Materials/Elkins Pit; 2009-03-24 to 2011-07-24; source msha-controller-operator-history
- **controller_controls_operator:** Jeff E  Fegert → Target Construction Inc; 2009-03-24 to 2011-07-24; source msha-controller-operator-history
- **operator_operates_mine:** Native Sun Materials Inc → Native Sun Materials/Elkins Pit; 2011-07-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dorothy  Allred → Native Sun Materials/Elkins Pit; 2011-07-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dorothy  Allred → Native Sun Materials Inc; 2011-07-25 to current/open; source msha-controller-operator-history