# Relationship history for MSHA mine 2402245

Current hierarchy: **Lee  St Clair → S & T Ready Mix Inc → S&T WASH PLANT**

- 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

- **operator_operates_mine:** S & T Ready Mix Inc → S&T WASH PLANT; 2001-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lee  St Clair → S&T WASH PLANT; 2001-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lee  St Clair → S & T Ready Mix Inc; 2001-09-01 to current/open; source msha-controller-operator-history