# Relationship history for MSHA mine 3609372

Current hierarchy: **William L  Hunsinger → Bill Hunsinger Const → Hunsinger & Son**

- 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:** Bill Hunsinger Const → Hunsinger & Son; 2005-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William L  Hunsinger → Hunsinger & Son; 2005-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William L  Hunsinger → Bill Hunsinger Const; 2005-10-04 to current/open; source msha-controller-operator-history