# Relationship history for MSHA mine 3402050

Current hierarchy: **Matthew Ward  Hanna → Pinnacle Materials, Inc. → Redgate #1**

- 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:** Robert L  Drake et al → Redgate #1; 2005-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** RB&J MATERIALS → Redgate #1; 2007-09-11 to 2011-12-04; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Drake et al → RB&J MATERIALS; 2007-09-11 to 2011-12-04; source msha-controller-operator-history
- **controller_controls_mine:** Matthew Ward  Hanna → Redgate #1; 2010-08-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Materials, Inc. → Redgate #1; 2011-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew Ward  Hanna → Pinnacle Materials, Inc.; 2011-12-05 to current/open; source msha-controller-operator-history