R44 RAVEN I Landing and takeoff creates sandstorm at construction site

Robinson’s R44 RAVEN I helicopter landing and takeoff at the KH construction site in Pyhäjoki, Finland. Helicopter’s specifications: Engine - Lycoming O-540, six cylinder, carburetted Horsepower - Derated to 225 for takeoff and 205 continuous Max Gross Weight - 2400 lb (1089 kg) Approximate Empty Weight (including oil & std avionics) - 1437 lb (652 kg) Standard Fuel (29.5 gal) - 177 lb (80 kg) Auxiliary Fuel (17.0 gal) - 102 lb (46 kg) Pilot, Passengers and Baggage with Standard Fuel - 786 lb (357 kg)