# Relationship history for MSHA mine 2103740

Current hierarchy: **Randy L  Peterson → Randy's Bobcat Service & Trucking Inc → Randy's Portable Screener**

- 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:** Randy's Bobcat Service & Trucking Inc → Randy's Portable Screener; 2011-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy L  Peterson → Randy's Portable Screener; 2011-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy L  Peterson → Randy's Bobcat Service & Trucking Inc; 2011-08-11 to current/open; source msha-controller-operator-history