# Relationship history for MSHA mine 3000043

Current hierarchy: **Dan  Clemente → Troy Sand & Gravel → TROY 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:** Fitzgerald Brothers Construction Company Inc → TROY SAND & GRAVEL; 1950-01-01 to 1982-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Penn-Dixie Industries Inc → TROY SAND & GRAVEL; 1950-01-01 to 1982-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Penn-Dixie Industries Inc → Fitzgerald Brothers Construction Company Inc; 1950-01-01 to 1982-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Jude  Clemente → TROY SAND & GRAVEL; 1950-01-01 to 2023-01-29; source msha-controller-operator-history
- **operator_operates_mine:** Callanan Industries Inc → TROY SAND & GRAVEL; 1982-08-01 to 1985-03-31; source msha-controller-operator-history
- **controller_controls_mine:** M & S Resources Inc → TROY SAND & GRAVEL; 1982-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M & S Resources Inc → Callanan Industries Inc; 1982-08-01 to 1985-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Callanan Industries Inc → TROY SAND & GRAVEL; 1985-04-01 to 2017-04-02; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → TROY SAND & GRAVEL; 1985-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Callanan Industries Inc; 1985-04-01 to 2017-04-02; source msha-controller-operator-history
- **operator_operates_mine:** Troy Sand & Gravel → TROY SAND & GRAVEL; 2017-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jude  Clemente → Troy Sand & Gravel; 2017-04-03 to 2023-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Clemente → TROY SAND & GRAVEL; 2023-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Clemente → Troy Sand & Gravel; 2023-01-30 to current/open; source msha-controller-operator-history