Burnley® Baffles are an international patented dust suppression device especially designed to reduce the escape of dust from dump hoppers and chutes handling dry granular bulk raw materials such as grains and ores. A typical Burnley Baffle installation consists of a set of baffle modules that fill the open inlet face of a hopper. In many cases the baffles are installed directly below the grizzly. Each module contains a set of blades that pivot to allow the material to flow through and into the hopper. The dust generated from the material falling into the hopper cannot escape because the hopper is only open where the material is entering. An 75% to 80% reduction in the size of dust collector and fan is achievable with the use of Burnley Baffles.