# Relationship history for MSHA mine 2902377

Current hierarchy: **Phil  Vasquez; Lucio  Vasquez → Interstate Stone LLC → 3 Mile 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Phil  Vasquez et al → 3 Mile Quarry; 2001-10-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Interstate Stone LLC → 3 Mile Quarry; 2007-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phil  Vasquez et al → Interstate Stone LLC; 2007-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lucio  Vasquez et al → Interstate Stone LLC; 2007-11-15 to current/open; source msha-controller-operator-history