# Relationship history for MSHA mine 1800549

Current hierarchy: **Francis E  Gardiner III → VSP Holdings, LLC → Randallstown Quarry / Vinci Quarry 1**

- 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:** Vinci Stone Products Inc → Randallstown Quarry / Vinci Quarry 1; 1950-01-01 to 2015-08-04; source msha-controller-operator-history
- **controller_controls_mine:** Agostino J  Vinci → Randallstown Quarry / Vinci Quarry 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Agostino J  Vinci → Vinci Stone Products Inc; 1950-01-01 to 2015-08-04; source msha-controller-operator-history
- **operator_operates_mine:** VSP Holdings, LLC → Randallstown Quarry / Vinci Quarry 1; 2015-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Francis E  Gardiner III et al → Randallstown Quarry / Vinci Quarry 1; 2015-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Francis E  Gardiner III et al → VSP Holdings, LLC; 2015-08-05 to current/open; source msha-controller-operator-history