# Relationship history for MSHA mine 3610093

Current hierarchy: **Carlos R  Mendoza → Mendoza Stone → Kilmer Quarry**

- 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:** Carlos R  Mendoza → Kilmer Quarry; 2011-04-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mendoza Stone → Kilmer Quarry; 2013-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carlos R  Mendoza → Mendoza Stone; 2013-12-04 to current/open; source msha-controller-operator-history