# Relationship history for MSHA mine 3610106

Current hierarchy: **Geovanny  Lopez → Lopez Stone → Lopez Stone Portable**

- 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:** Lopez Stone → Lopez Stone Portable; 2014-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Geovanny  Lopez → Lopez Stone Portable; 2014-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Geovanny  Lopez → Lopez Stone; 2014-04-17 to current/open; source msha-controller-operator-history