# Relationship history for MSHA mine 4105497

Current hierarchy: **Justin  Prater → Prater Dirt Work, LLC → Comanche Quarry**

- 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:** Prater Dirt Work, LLC → Comanche Quarry; 2020-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Justin  Prater → Comanche Quarry; 2020-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin  Prater → Prater Dirt Work, LLC; 2020-06-09 to current/open; source msha-controller-operator-history