# Relationship history for MSHA mine 3003547

Current hierarchy: **Dan  Clemente → Troy Sand & Gravel Co Inc → TROY SAND & GRAVEL MECHANICVILLE PLANT**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Jude  Clemente → TROY SAND & GRAVEL MECHANICVILLE PLANT; 1950-01-01 to 2023-01-29; source msha-controller-operator-history
- **operator_operates_mine:** Troy Sand & Gravel Co Inc → TROY SAND & GRAVEL MECHANICVILLE PLANT; 2006-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jude  Clemente → Troy Sand & Gravel Co Inc; 2006-05-05 to 2023-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Clemente → TROY SAND & GRAVEL MECHANICVILLE PLANT; 2023-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Clemente → Troy Sand & Gravel Co Inc; 2023-01-30 to current/open; source msha-controller-operator-history