# Relationship history for MSHA mine 4105082

Current hierarchy: **Stan  Collier → Collier Materials Inc → Long Pit**

- 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:** Stan  Collier → Long Pit; 2000-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Collier Materials Inc → Long Pit; 2014-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stan  Collier → Collier Materials Inc; 2014-09-16 to current/open; source msha-controller-operator-history