# Relationship history for MSHA mine 1002296

Current hierarchy: **Lance S Thueson; Janel  Thueson → River Rock Sand & Gravel, LLC → Portable Crusher #3 (54**

- 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:** Lance S Thueson et al → Portable Crusher #3 (54; 2005-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** River Rock Sand & Gravel, LLC → Portable Crusher #3 (54; 2017-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lance S Thueson et al → River Rock Sand & Gravel, LLC; 2017-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Janel  Thueson et al → River Rock Sand & Gravel, LLC; 2017-11-30 to current/open; source msha-controller-operator-history