Exposure to dangerous toxins at an Alabama chemical manufacturing plant lead to the deaths of two (2) workers and sickened another worker after the employer failed to provide appropriate protective equipment and implement safe work practices during maintenance activities on chemical processing equipment. An OSHA investigation found the exposure occurred while the workers were conducting maintenance activities requiring a processing line break, a nitrogen purge, and atmospheric venting of equipment, resulting in the release of toxic fluorocarbons and other hazardous chemicals.