SRL for [shuttling]: Mechanized vacuum cleaners probe the sand like giant anteaters ; a whirring ferris wheellike excavator , with buckets instead of seats , chews through layers of compacted sand ; tracks and conveyor belts , [shuttling] sand to the screening plants , criss - cross the beach .
ARG-0: tracks and conveyor belts | ARG-1: sand | ARG-3: to the screening plants