# Relationship history for MSHA mine 3001692

Current hierarchy: **CRH PLC → Tilcon New York Inc → EMPIRE 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Ringwood Sand & Gravel Company Of New York → EMPIRE SAND & GRAVEL; 1950-01-01 to 1980-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Charles J  Rossi → EMPIRE SAND & GRAVEL; 1950-01-01 to 1980-02-13; source msha-controller-operator-history
- **controller_controls_operator:** Charles J  Rossi → Ringwood Sand & Gravel Company Of New York; 1950-01-01 to 1980-02-13; source msha-controller-operator-history
- **operator_operates_mine:** Empire Stone Products Inc → EMPIRE SAND & GRAVEL; 1980-02-14 to 1980-11-12; source msha-controller-operator-history
- **controller_controls_mine:** John  Magee → EMPIRE SAND & GRAVEL; 1980-02-14 to 1980-11-12; source msha-controller-operator-history
- **controller_controls_operator:** John  Magee → Empire Stone Products Inc; 1980-02-14 to 1980-11-12; source msha-controller-operator-history
- **operator_operates_mine:** Empire Stone Products → EMPIRE SAND & GRAVEL; 1980-11-13 to 1987-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Nicholas P  Pappas → EMPIRE SAND & GRAVEL; 1980-11-13 to 1987-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Nicholas P  Pappas → Empire Stone Products; 1980-11-13 to 1987-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Empire Stone Products Inc → EMPIRE SAND & GRAVEL; 1987-08-01 to 1999-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Anthony J  Dellechiaie → EMPIRE SAND & GRAVEL; 1987-08-01 to 1999-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Anthony J  Dellechiaie → Empire Stone Products Inc; 1987-08-01 to 1999-06-30; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → EMPIRE SAND & GRAVEL; 1996-09-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tilcon New York Inc → EMPIRE SAND & GRAVEL; 1999-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Tilcon New York Inc; 1999-07-01 to current/open; source msha-controller-operator-history