# Relationship history for MSHA mine 1103119

Current hierarchy: **David C  Gummere → Auger Mining Inc → A M No 3**

- 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:** North American Auger Mining Inc. → A M No 3; 2003-10-10 to 2006-04-16; source msha-controller-operator-history
- **controller_controls_mine:** David C  Gummere → A M No 3; 2003-10-10 to 2006-07-19; source msha-controller-operator-history
- **controller_controls_operator:** David C  Gummere → North American Auger Mining Inc.; 2003-10-10 to 2006-04-16; source msha-controller-operator-history
- **operator_operates_mine:** Auger Mining Inc → A M No 3; 2006-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David C  Gummere → A M No 3; 2006-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David C  Gummere → Auger Mining Inc; 2006-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** D Kent  Glover → A M No 3; 2006-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** D Kent  Glover → North American Auger Mining Inc.; 2006-07-20 to 2006-04-16; source msha-controller-operator-history