# Relationship history for MSHA mine 3609941

Current hierarchy: **Brad  Kiser → WDK Enterprises, Inc. → WDK Strips**

- 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:** WDK Enterprises, Inc. → WDK Strips; 2011-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brad  Kiser → WDK Strips; 2011-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Kiser → WDK Enterprises, Inc.; 2011-08-02 to current/open; source msha-controller-operator-history