# Relationship history for MSHA mine 2700513

Current hierarchy: **Laurent  Rancourt → Laurent Rancourt → 2005 S5 Crawler Screener 9475**

- 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:** Laurent  Rancourt → 2005 S5 Crawler Screener 9475; 2000-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Laurent Rancourt → 2005 S5 Crawler Screener 9475; 2019-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Laurent  Rancourt → Laurent Rancourt; 2019-10-22 to current/open; source msha-controller-operator-history