# Relationship history for MSHA mine 4105246

Current hierarchy: **Sarah  Lux; Dustin T Lux → Shea Quarry LLC → Shea 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

- **operator_operates_mine:** Shea Quarry LLC → Shea Quarry; 2017-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sarah  Lux et al → Shea Quarry; 2017-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sarah  Lux et al → Shea Quarry LLC; 2017-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dustin T Lux et al → Shea Quarry LLC; 2017-04-03 to current/open; source msha-controller-operator-history