Видео с ютуба Concrete Pumping Hand Signals

HAND SIGNALS FOR A CONCRETE TRUCK

Concrete Truck Operator hand signals.

ACPA Hand Signals

SCW Footings & Foundations - Safety Meeting - Hand Signals for Cranes & Pumps

Coworker Safety and Hose Handling - ENGLISH

Con Forms High-Pressure Concrete Pumping System

The Amazing Concrete Pump Machine and How It Works