# Relationship history for MSHA mine 3901524

Current hierarchy: **Peggy  Kranz; Charles  Kranz → Peters Gravel LLC → Peters Gravel LLC**

- 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:** Peters Gravel LLC → Peters Gravel LLC; 2008-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Kranz et al → Peters Gravel LLC; 2008-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Kranz et al → Peters Gravel LLC; 2008-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peggy  Kranz et al → Peters Gravel LLC; 2008-06-12 to current/open; source msha-controller-operator-history