# Relationship history for MSHA mine 4801485

Current hierarchy: **Pinnacle West Capital Corp → Malapai Resources Company → Christensen Ranch**

- 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:** Pinnacle West Capital Corp → Christensen Ranch; 1986-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Malapai Resources Company → Christensen Ranch; 1988-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pinnacle West Capital Corp → Malapai Resources Company; 1988-06-01 to current/open; source msha-controller-operator-history