# Relationship history for MSHA mine 0600787

Current hierarchy: **Robert P Neubig → Neuco Corp → Neubig Robert 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Neuco Corp → Neubig Robert Portable #1; 2014-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert P Neubig → Neubig Robert Portable #1; 2014-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert P Neubig → Neuco Corp; 2014-11-18 to current/open; source msha-controller-operator-history