As defined by OSHA, combustible dust is “a solid material composed of distinct particles or pieces, regardless of size, shape or chemical composition, which can present a fire or deflagration hazard when suspended in air or some other oxidizing medium over a range of concentrations.”

Crystalline silica is an abundant natural material found in soil, stone and sand. It is also present in many construction materials such as brick, mortar and concrete. It becomes respirable when any of the afore-mentioned materials are cut or broken down into fine particles.

Crystalline silica is one of the most common minerals found worldwide in the earth’s crust. It is frequently used in many industrial processes such as mining, quarrying and stone-cutting. Breathing air contaminated with crystalline silica particles can cause serious respiratory and lung diseases.

OSHA estimates some two million construction employees are exposed to respirable crystalline silica in more than 600,000 workplaces across the country. To comply, companies need to follow multiple steps that aren’t always as easy as they might seem.

'Method of Testing the Performance of Industrial Pulse Cleaned Dust Collectors,' provides a way to accurately assess and compare self-cleaning dust collection systems. These are systems that use compressed air to discharge the dust cake from the filter without taking the air filter off line.