# Relationship history for MSHA mine 0404777

Current hierarchy: **Reed Family Companies → 7/11 Materials Inc → 7/11 Materials - Adams 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:** M J  Hiatt → 7/11 Materials - Adams Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hiatt Sand & Gravel → 7/11 Materials - Adams Pit; 1985-10-01 to 1989-11-01; source msha-controller-operator-history
- **controller_controls_operator:** M J  Hiatt → Hiatt Sand & Gravel; 1985-10-01 to 1989-11-01; source msha-controller-operator-history
- **operator_operates_mine:** Hiatt Ready Mix Inc → 7/11 Materials - Adams Pit; 1989-11-02 to 2009-10-05; source msha-controller-operator-history
- **controller_controls_mine:** D R  Cheeseman → 7/11 Materials - Adams Pit; 1989-11-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** D R  Cheeseman → Hiatt Ready Mix Inc; 1989-11-02 to 2009-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Reed Family Companies → 7/11 Materials - Adams Pit; 1995-04-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** 7/11 Materials Inc → 7/11 Materials - Adams Pit; 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