# Relationship history for MSHA mine 0202500

Current hierarchy: **Salt River Pima-Maricopa Indian Community → Salt River Materials Group → Plant #5**

- 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

- **controller_controls_mine:** Salt River Pima-Maricopa Indian Community → Plant #5; 1981-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Salt River Materials Group → Plant #5; 1989-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Salt River Pima-Maricopa Indian Community → Salt River Materials Group; 1989-11-01 to current/open; source msha-controller-operator-history