Dust collection system

A system for cutting and cleaning material to be cut. The system is particularly effective for hard materials which produce heavy particles. The system is ideal for cutting green concrete. This invention provides a two-piece device for locating vacuum a hose connection for a circular saw used in cutting concrete. The hose connection is contained in the low, rear part of the lower piece. The invention also proves a vacuum cleaner which passes debris-laden air through water which collects the debris. Water-laden air rising from the water is passed around a first water barrier connected to a float and a second water barrier connected to the top of the container in order to remove entrapped water droplets which may contain debris.