# Relationship history for MSHA mine 4104410

Current hierarchy: **Jose D  Perez → Cantera Stone → Ellenbracht 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Cantera Stone → Ellenbracht Quarry; 2003-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jose D  Perez → Ellenbracht Quarry; 2003-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose D  Perez → Cantera Stone; 2003-03-13 to current/open; source msha-controller-operator-history