# Relationship history for MSHA mine 4104544

Current hierarchy: **Patrocinio (Pat) T  Hernandez → Hernandez Rock → Keeney Pit**

- 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:** Patrocinio (Pat) T  Hernandez → Keeney Pit; 2003-11-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hernandez Rock → Keeney Pit; 2005-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrocinio (Pat) T  Hernandez → Hernandez Rock; 2005-07-26 to current/open; source msha-controller-operator-history