# Relationship history for MSHA mine 4202419

Current hierarchy: **Jeffrey L  Sagers → Southwest Stone → Virgin 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:** Doug  Strate et al → Virgin Quarry; 2004-08-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southwest Stone, LLC → Virgin Quarry; 2005-09-20 to 2010-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Doug  Strate et al → Southwest Stone, LLC; 2005-09-20 to 2010-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey L  Sagers et al → Southwest Stone, LLC; 2005-09-20 to 2010-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey L  Sagers → Virgin Quarry; 2009-10-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southwest Stone → Virgin Quarry; 2010-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey L  Sagers → Southwest Stone; 2010-07-01 to current/open; source msha-controller-operator-history