# Relationship history for MSHA mine 1102940

Current hierarchy: **Quikrete Holdings Inc. → Quikrete Materials LLC → Quikrete Peoria**

- 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:** Cornick Concrete Products Co. → Quikrete Peoria; 1993-06-01 to 2006-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Dean M  Cornick → Quikrete Peoria; 1993-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean M  Cornick → Cornick Concrete Products Co.; 1993-06-01 to 2006-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Quikrete Holdings Inc. → Quikrete Peoria; 1998-09-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cornick Concrete Products Co → Quikrete Peoria; 2006-11-30 to 2010-11-02; source msha-controller-operator-history
- **controller_controls_mine:** Tim  Sonnentag et al → Quikrete Peoria; 2006-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Sonnentag et al → Cornick Concrete Products Co; 2006-11-30 to 2010-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Quikrete Materials LLC → Quikrete Peoria; 2010-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quikrete Holdings Inc. → Quikrete Materials LLC; 2010-11-03 to current/open; source msha-controller-operator-history