# Relationship history for MSHA mine 3001526

Current hierarchy: **Progressive Green Solutions Inc; Eugene  Fernandez → Speyside Holdings LLC → SPEYSIDE HOLDINGS LLC**

- 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:** Highland Sand & Gravel Inc → SPEYSIDE HOLDINGS LLC; 1950-01-01 to 2015-05-26; source msha-controller-operator-history
- **controller_controls_mine:** Joan  Squicciarini → SPEYSIDE HOLDINGS LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joan  Squicciarini → Highland Sand & Gravel Inc; 1950-01-01 to 2015-05-26; source msha-controller-operator-history
- **operator_operates_mine:** Speyside Holdings LLC → SPEYSIDE HOLDINGS LLC; 2015-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eugene  Fernandez et al → SPEYSIDE HOLDINGS LLC; 2015-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eugene  Fernandez et al → Speyside Holdings LLC; 2015-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Progressive Green Solutions Inc et al → Speyside Holdings LLC; 2015-05-27 to current/open; source msha-controller-operator-history