# Relationship history for MSHA mine 2100451

Current hierarchy: **Arel Roger → Brooklyn Trucking Company Inc → Brooklyn Trucking**

- 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:** A & B Aggregate Inc → Brooklyn Trucking; 1950-01-01 to 1979-10-31; source msha-controller-operator-history
- **controller_controls_mine:** A & B Aggregate Inc → Brooklyn Trucking; 1950-01-01 to 1979-10-31; source msha-controller-operator-history
- **controller_controls_operator:** A & B Aggregate Inc → A & B Aggregate Inc; 1950-01-01 to 1979-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Midwest Asphalt Corp → Brooklyn Trucking; 1979-11-01 to 1986-10-28; source msha-controller-operator-history
- **controller_controls_mine:** Midwest Asphalt Corp → Brooklyn Trucking; 1979-11-01 to 1986-10-28; source msha-controller-operator-history
- **controller_controls_operator:** Midwest Asphalt Corp → Midwest Asphalt Corp; 1979-11-01 to 1986-10-28; source msha-controller-operator-history
- **operator_operates_mine:** Brooklyn Trucking Company Inc → Brooklyn Trucking; 1986-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arel Roger → Brooklyn Trucking; 1986-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arel Roger → Brooklyn Trucking Company Inc; 1986-10-29 to current/open; source msha-controller-operator-history