Book excerpt: Addresses health and safety issues associated with workplace Nanoparticle exposures • Describes methods to evaluate and control worker exposures to engineered nanoparticles • Provides guidance for concerned EHS professionals on acceptable levels of exposure to nanoparticles • Includes documentation on best practices to be followed by all researchers when working with engineered nanoparticles • Describes current knowledge on toxicity of nanoparticles • Includes coverage on Routes of Exposure for Engineered Nanoparticles