# Relationship history for MSHA mine 4609271

Current hierarchy: **Brandon  Nguyen; Michael  Turner → Ambush Mining Inc → Mine 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** William  Haskins  et al → Mine No 3; 1999-03-01 to 2008-04-15; source msha-controller-operator-history
- **operator_operates_mine:** Ambush Mining Inc → Mine No 3; 2008-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Turner  et al → Mine No 3; 2008-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Turner  et al → Ambush Mining Inc; 2008-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brandon  Nguyen  et al → Ambush Mining Inc; 2008-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Haskins  et al → Ambush Mining Inc; 2008-04-16 to 2008-04-15; source msha-controller-operator-history
- **controller_controls_operator:** Michael D  Turner  et al → Ambush Mining Inc; 2008-04-16 to 2008-04-15; source msha-controller-operator-history