# Relationship history for MSHA mine 2401976

Current hierarchy: **Arthur Larry; Larry  Arthur → L A Construction Inc → Hutterites Cascade Colony 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

- **controller_controls_mine:** Arthur Larry → Hutterites Cascade Colony Quarry; 1989-10-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L A Construction Inc → Hutterites Cascade Colony Quarry; 1992-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arthur Larry → L A Construction Inc; 1992-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Arthur → L A Construction Inc; 1992-08-01 to current/open; source msha-controller-operator-history