# Relationship history for MSHA mine 2700483

Current hierarchy: **Laurent  Rancourt → laurent rancourt → extec 3107**

- 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:** Laurent  Rancourt → extec 3107; 2000-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** laurent rancourt → extec 3107; 2014-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Laurent  Rancourt → laurent rancourt; 2014-08-18 to current/open; source msha-controller-operator-history