# Relationship history for MSHA mine 0503830

Current hierarchy: **Paul E  Danio → Colorado Consolidated Metals Corp → California Shaft**

- 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

- **operator_operates_mine:** Colorado Consolidated Metals Corp → California Shaft; 1983-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paul E  Danio  et al → California Shaft; 1983-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul E  Danio  et al → Colorado Consolidated Metals Corp; 1983-01-01 to current/open; source msha-controller-operator-history