# Relationship history for MSHA mine 1302381

Current hierarchy: **Gale M  Peterson; Cordell Q  Peterson → Peterson Contractors Inc → Portable Number 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

- **operator_operates_mine:** Peterson Contractors Inc → Portable Number 2; 2009-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cordell Q  Peterson et al → Portable Number 2; 2009-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cordell Q  Peterson et al → Peterson Contractors Inc; 2009-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gale M  Peterson et al → Peterson Contractors Inc; 2009-03-02 to current/open; source msha-controller-operator-history