# Relationship history for MSHA mine 2302453

Current hierarchy: **Jason D  Viebrock → Indian Creek Rock & Sand → Indian Creek**

- 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:** Indian Creek Rock & Sand → Indian Creek; 2013-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason D  Viebrock → Indian Creek; 2013-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason D  Viebrock → Indian Creek Rock & Sand; 2013-05-13 to current/open; source msha-controller-operator-history