# Relationship history for MSHA mine 4104598

Current hierarchy: **Arturo  Higareda → Higareda's Rock Pit → Higareda's Rock 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

- **operator_operates_mine:** Higareda Landscaping → Higareda's Rock Pit; 2006-04-26 to 2008-06-09; source msha-controller-operator-history
- **controller_controls_mine:** Gabriel  Higareda → Higareda's Rock Pit; 2006-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gabriel  Higareda → Higareda Landscaping; 2006-04-26 to 2008-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Higareda's Rock Pit → Higareda's Rock Pit; 2008-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arturo  Higareda → Higareda's Rock Pit; 2008-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arturo  Higareda → Higareda's Rock Pit; 2008-06-10 to current/open; source msha-controller-operator-history