# Relationship history for MSHA mine 3503797

Current hierarchy: **Michael  Bernert; Dave  Bernert → Wilsonville Concrete Products, Inc. → Palisades Ranch**

- 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

- **controller_controls_mine:** Joseph  Bernert et al → Palisades Ranch; 2007-08-01 to 2022-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Wilsonville Concrete Products, Inc. → Palisades Ranch; 2013-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Bernert et al → Wilsonville Concrete Products, Inc.; 2013-08-18 to 2022-06-30; source msha-controller-operator-history
- **controller_controls_operator:** David  Bernert et al → Wilsonville Concrete Products, Inc.; 2013-08-18 to 2022-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Bernert et al → Palisades Ranch; 2022-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Bernert et al → Wilsonville Concrete Products, Inc.; 2022-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dave  Bernert et al → Wilsonville Concrete Products, Inc.; 2022-07-01 to current/open; source msha-controller-operator-history