# Relationship history for MSHA mine 2302079

Current hierarchy: **Hunt Midwest Enterprises → Hunt Midwest Mining Inc → E E QUARRY**

- 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:** Green Quarries Inc → E E QUARRY; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hunt Midwest Enterprises → E E QUARRY; 1985-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** E E Rock & Lime Inc → E E QUARRY; 1993-03-01 to 1997-04-30; source msha-controller-operator-history
- **controller_controls_mine:** E W  Ireland → E E QUARRY; 1993-03-01 to 1997-04-30; source msha-controller-operator-history
- **controller_controls_operator:** E W  Ireland → E E Rock & Lime Inc; 1993-03-01 to 1997-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Green Quarries Inc → E E QUARRY; 1997-05-01 to 2000-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Green Quarries Inc → Green Quarries Inc; 1997-05-01 to 2000-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Hunt Midwest Mining Inc → E E QUARRY; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hunt Midwest Enterprises → Hunt Midwest Mining Inc; 2000-06-01 to current/open; source msha-controller-operator-history