# Relationship history for MSHA mine 4105479

Current hierarchy: **Zachry Corporation → Capitol Aggregates, Inc. → Mathis Sand & Gravel**

- 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:** Zachry Corporation → Mathis Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Garrett  Tindol et al → Mathis Sand & Gravel; 2011-08-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Patriot Dozer Service LLC → Mathis Sand & Gravel; 2019-12-02 to 2024-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Garrett  Tindol et al → Patriot Dozer Service LLC; 2019-12-02 to 2024-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Tindol et al → Patriot Dozer Service LLC; 2019-12-02 to 2024-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Capitol Aggregates, Inc. → Mathis Sand & Gravel; 2024-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zachry Corporation → Capitol Aggregates, Inc.; 2024-11-03 to current/open; source msha-controller-operator-history