# Relationship history for MSHA mine 2003366

Current hierarchy: **J C  E  Millikin; J C  M  Millikin → Jack Millikin Inc → Portable 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Jack Millikin Inc → Portable 1; 2006-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** J C  E  Millikin  et al → Portable 1; 2006-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J C  E  Millikin  et al → Jack Millikin Inc; 2006-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J C  M  Millikin  et al → Jack Millikin Inc; 2006-06-22 to current/open; source msha-controller-operator-history