# Relationship history for MSHA mine 0202878

Current hierarchy: **Craig  Hills → Phoenix  San-Man → Goodyear Wash Plant #13**

- 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:** Craig  Hills et al → Goodyear Wash Plant #13; 1999-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Phoenix  San-Man → Goodyear Wash Plant #13; 2000-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig  Hills et al → Phoenix  San-Man; 2000-04-01 to current/open; source msha-controller-operator-history