# Relationship history for MSHA mine 0203223

Current hierarchy: **Charles Edward  Canipe → Canipe Trucking → Blue Bird**

- 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:** Canipe Trucking → Blue Bird; 2008-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles Edward  Canipe → Blue Bird; 2008-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles Edward  Canipe → Canipe Trucking; 2008-06-19 to current/open; source msha-controller-operator-history