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