Dr. William (Bill) Longo is a Material Scientist/Electron Microscopist who specializes in the analysis of asbestos containing materials. In 1983, he founded Micro Analytical Laboratories, which became one of the first commercial labs in the country to provide Transmission Electron Microscopy (TEM) analysis of asbestos-containing air and dust samples. In 1987, Dr. Longo became president of Materials Analytical Services. Under his guidance, MAS grew into a leading laboratory in the fields of chemical analysis and materials characterization for a number of industries including: occupational health safety, environmental, engineering services, industrial hygiene, and building and construction materials. Bill is currently the CEO of MAS.