# Relationship history for MSHA mine 0202261

Current hierarchy: **Vulcan Materials Company → CalMat Co → West Broadway**

- 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:** Sun Materials → West Broadway; 1985-07-01 to 1987-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Rein-Schultz & Dahl Of Illinois Inc → West Broadway; 1985-07-01 to 1987-04-23; source msha-controller-operator-history
- **controller_controls_operator:** Rein-Schultz & Dahl Of Illinois Inc → Sun Materials; 1985-07-01 to 1987-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Mesa Materials → West Broadway; 1987-04-24 to 2014-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Edward C  Levy Jr et al → West Broadway; 1987-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward C  Levy Jr et al → Mesa Materials; 1987-04-24 to 2014-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → West Broadway; 1999-01-06 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → West Broadway; 2007-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CalMat Co → West Broadway; 2014-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → CalMat Co; 2014-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → CalMat Co; 2014-08-22 to 2007-11-15; source msha-controller-operator-history