# Relationship history for MSHA mine 2402444

Current hierarchy: **Thomas R  Patrick → JTL Portable Crusher #3 → Beaver Creek 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:** T. P. Construction → Beaver Creek Quarry; 2006-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas R  Patrick → Beaver Creek Quarry; 2006-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas R  Patrick → T. P. Construction; 2006-05-16 to current/open; source msha-controller-operator-history