# Relationship history for MSHA mine 3004048

Current hierarchy: **Jason  Knowles → Empire Crushing LLC → McClosky I44 impact crusher sn#81125**

- 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:** Empire Crushing LLC → McClosky I44 impact crusher sn#81125; 2020-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bradley  Rogers et al → McClosky I44 impact crusher sn#81125; 2020-04-08 to 2021-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Bradley  Rogers et al → Empire Crushing LLC; 2020-04-08 to 2021-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Knowles et al → Empire Crushing LLC; 2020-04-08 to 2021-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Jason  Knowles → McClosky I44 impact crusher sn#81125; 2021-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Knowles → Empire Crushing LLC; 2021-07-11 to current/open; source msha-controller-operator-history