# Relationship history for MSHA mine 0505195

Current hierarchy: **Ron D  Peterson → Rock Tran LLC → Crushing & Mobile Screening #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

- **controller_controls_mine:** Ron D  Peterson → Crushing & Mobile Screening #1; 2024-03-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rock Tran LLC → Crushing & Mobile Screening #1; 2024-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ron D  Peterson → Rock Tran LLC; 2024-12-05 to current/open; source msha-controller-operator-history