# Relationship history for MSHA mine 3200920

Current hierarchy: **Matthew Ward  Hanna → Pinnacle Materials LLC → Thompson Pit**

- 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:** Matthew Ward  Hanna → Thompson Pit; 2010-08-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Materials, Inc → Thompson Pit; 2011-10-13 to 2012-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Matthew Ward  Hanna → Pinnacle Materials, Inc; 2011-10-13 to 2012-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Matthew Ward  Hanna → Thompson Pit; 2012-04-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Materials LLC → Thompson Pit; 2012-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew Ward  Hanna → Pinnacle Materials LLC; 2012-05-01 to current/open; source msha-controller-operator-history