# Relationship history for MSHA mine 4300043

Current hierarchy: **Thomas B  Fabbioli → VERMONT VERDE ANTIQUE LLC → ROCHESTER QUARRY**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Vermont Marble Company → ROCHESTER QUARRY; 1950-01-01 to 1993-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Omya Industries Inc → ROCHESTER QUARRY; 1950-01-01 to 1996-06-18; source msha-controller-operator-history
- **controller_controls_operator:** Omya Industries Inc → Vermont Marble Company; 1950-01-01 to 1993-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Vermont Verde Antique International Inc → ROCHESTER QUARRY; 1993-04-01 to 2007-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Dorando F  Cavallacci Jr → ROCHESTER QUARRY; 1993-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dorando F  Cavallacci Jr → Vermont Verde Antique International Inc; 1993-04-01 to 2007-08-19; source msha-controller-operator-history
- **operator_operates_mine:** Vermont Verde Antique LLC → ROCHESTER QUARRY; 2007-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas B  Fabbioli → ROCHESTER QUARRY; 2007-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas B  Fabbioli → Vermont Verde Antique LLC; 2007-08-20 to current/open; source msha-controller-operator-history