# Relationship history for MSHA mine 4703766

Current hierarchy: **David L Albright; James E Albright → Albright Brothers LLC → Albright Brothers LLC**

- 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:** Albright Brothers LLC → Albright Brothers LLC; 2015-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James E Albright et al → Albright Brothers LLC; 2015-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James E Albright et al → Albright Brothers LLC; 2015-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David L Albright et al → Albright Brothers LLC; 2015-07-29 to current/open; source msha-controller-operator-history