# Relationship history for MSHA mine 0600713

Current hierarchy: **Robert E  Reed → BRD LLC → 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** BRD LLC → PORTABLE PLANT #1; 2004-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert E  Reed → PORTABLE PLANT #1; 2004-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Reed → BRD LLC; 2004-02-24 to current/open; source msha-controller-operator-history