# Relationship history for MSHA mine 0405558

Current hierarchy: **Clarence  Wagenaar → KMI Zeolite Inc → KMI Zeolite Mine**

- 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:** Clarence  Wagenaar → KMI Zeolite Mine; 2000-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** KMI Zeolite Inc → KMI Zeolite Mine; 2003-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clarence  Wagenaar → KMI Zeolite Inc; 2003-05-08 to current/open; source msha-controller-operator-history