Figure 7-2. - Water-in-oil separators.

Asbestos

Another air pollutant that you must be knowledgeable of and concerned with is asbestos dust. Asbestos dust occurs in the installation, maintenance, and removal of asbestos material from a construction site.

Asbestos is a fibrous mineral that can be woven like wool. Through a variety of processes, asbestos can be turned into thousands of construction products, These products were used extensively from the 1930s through the 1960s. Asbestos has been used by mankind for over 2500 years. However, it was not until the early 1800s