# Relationship history for MSHA mine 1601544

Current hierarchy: **Clint  Bishop; Donald  Bishop → H & L Aggregates, LLC → Island**

- 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:** H & L Aggregates, LLC → Island; 2014-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donald  Bishop et al → Island; 2014-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald  Bishop et al → H & L Aggregates, LLC; 2014-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clint  Bishop et al → H & L Aggregates, LLC; 2014-10-20 to current/open; source msha-controller-operator-history