# Relationship history for MSHA mine 0301947

Current hierarchy: **Tim  Hill → Tim Hill → Dustin and Austin 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Tim Hill → Dustin and Austin Mine; 2007-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tim  Hill → Dustin and Austin Mine; 2007-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Hill → Tim Hill; 2007-04-24 to current/open; source msha-controller-operator-history