# Relationship history for MSHA mine 2003318

Current hierarchy: **Brian Stephen  Krug → B K Crushing LLC → Findlay 390**

- 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

- **controller_controls_mine:** Brian Stephen  Krug → Findlay 390; 2003-08-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B K Crushing LLC → Findlay 390; 2005-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian Stephen  Krug → B K Crushing LLC; 2005-05-24 to current/open; source msha-controller-operator-history