# Relationship history for MSHA mine 0401013

Current hierarchy: **Courtney  Hansen; Clayton  Hansen → C & C Cinder Company, LLC → Rebecca De Boy Mine**

- 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:** B S B Cinder Company → Rebecca De Boy Mine; 1950-01-01 to 2025-01-20; source msha-controller-operator-history
- **controller_controls_mine:** Joseph S  Barbara → Rebecca De Boy Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph S  Barbara → B S B Cinder Company; 1950-01-01 to 2025-01-20; source msha-controller-operator-history
- **operator_operates_mine:** C & C Cinder Company, LLC → Rebecca De Boy Mine; 2025-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clayton  Hansen et al → Rebecca De Boy Mine; 2025-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clayton  Hansen et al → C & C Cinder Company, LLC; 2025-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Courtney  Hansen et al → C & C Cinder Company, LLC; 2025-01-21 to current/open; source msha-controller-operator-history