# Relationship history for MSHA mine 4202769

Current hierarchy: **Andrew Scott  Hall → ASH Rock → ASH Rock**

- 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

- **controller_controls_mine:** Andrew Scott  Hall → ASH Rock; 2021-04-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** ASH Rock → ASH Rock; 2024-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andrew Scott  Hall → ASH Rock; 2024-10-07 to current/open; source msha-controller-operator-history