# Relationship history for MSHA mine 1002214

Current hierarchy: **Jeff  Hines → HNS Inc → Portable Plant #2**

- 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

- **controller_controls_mine:** Jeff  Hines → Portable Plant #2; 1998-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** HNS Inc → Portable Plant #2; 2011-01-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Hines → HNS Inc; 2011-01-07 to current/open; source msha-controller-operator-history