# Relationship history for MSHA mine 4801807

Current hierarchy: **Keith  Hughes → E-Cubed Industries, LLC. → Mobile Jaw Crusher**

- 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:** E-Cubed Industries, LLC. → Mobile Jaw Crusher; 2018-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Keith  Hughes → Mobile Jaw Crusher; 2018-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Hughes → E-Cubed Industries, LLC.; 2018-01-16 to current/open; source msha-controller-operator-history