# Relationship history for MSHA mine 1901288

Current hierarchy: **Brian M  LeDuc → ROSATI MATERIAL INC. → ROSATI MATERIAL PIT 1**

- 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

- **controller_controls_mine:** Rosati John F → ROSATI MATERIAL PIT 1; 1950-01-01 to 2019-10-02; source msha-controller-operator-history
- **operator_operates_mine:** John's Trucking of Agawam Inc → ROSATI MATERIAL PIT 1; 2019-10-03 to 2024-02-07; source msha-controller-operator-history
- **controller_controls_mine:** John V  Rosati → ROSATI MATERIAL PIT 1; 2019-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John V  Rosati → John's Trucking of Agawam Inc; 2019-10-03 to 2024-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Rosati John F → John's Trucking of Agawam Inc; 2019-10-03 to 2019-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Rosati Material Inc. → ROSATI MATERIAL PIT 1; 2024-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian M  LeDuc → ROSATI MATERIAL PIT 1; 2024-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian M  LeDuc → Rosati Material Inc.; 2024-02-08 to current/open; source msha-controller-operator-history