# Relationship history for MSHA mine 0405570

Current hierarchy: **Reed Family Companies → 7/11 Materials Inc → 7/11 Materials - Coyote Valley Aggregate**

- 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:** D R  Cheeseman → 7/11 Materials - Coyote Valley Aggregate; 1989-11-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reed Family Companies → 7/11 Materials - Coyote Valley Aggregate; 1995-04-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hiatt Ready Mix Inc → 7/11 Materials - Coyote Valley Aggregate; 2003-09-01 to 2009-10-05; source msha-controller-operator-history
- **controller_controls_operator:** D R  Cheeseman → Hiatt Ready Mix Inc; 2003-09-01 to 2009-10-05; source msha-controller-operator-history
- **operator_operates_mine:** 7/11 Materials Inc → 7/11 Materials - Coyote Valley Aggregate; 2009-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reed Family Companies → 7/11 Materials Inc; 2009-10-06 to current/open; source msha-controller-operator-history