# Relationship history for MSHA mine 1302390

Current hierarchy: **Matt J  Halligan → Mobile Crushing & Recycling Inc → Portable Plant #1**

- 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:** Mobile Crushing & Recycling Inc → Portable Plant #1; 2009-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Matt J  Halligan → Portable Plant #1; 2009-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matt J  Halligan → Mobile Crushing & Recycling Inc; 2009-04-27 to current/open; source msha-controller-operator-history