# Relationship history for MSHA mine 0504479

Current hierarchy: **Reginald V  Golden → Golden'S Andesite Mining Company → GOLDEN'S ANDESITE WINDSOR**

- 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

- **operator_operates_mine:** Poudre Tech Aggregates Inc → GOLDEN'S ANDESITE WINDSOR; 1992-03-01 to 1999-01-15; source msha-controller-operator-history
- **controller_controls_mine:** Lind Martin → GOLDEN'S ANDESITE WINDSOR; 1992-03-01 to 1999-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Lind Martin → Poudre Tech Aggregates Inc; 1992-03-01 to 1999-01-15; source msha-controller-operator-history
- **controller_controls_mine:** Reginald V  Golden → GOLDEN'S ANDESITE WINDSOR; 1992-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Golden'S Andesite Mining Company → GOLDEN'S ANDESITE WINDSOR; 1999-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reginald V  Golden → Golden'S Andesite Mining Company; 1999-01-16 to current/open; source msha-controller-operator-history