Describes various commonly used methods of initial factoring and factor rotation. In addition to a full discussion of exploratory factor analysis, confirmatory factor analysis and various methods of constructing factor scales are also presented.

The National Institute for Occupational Safety and Health (NIOSH) received a request for a health hazard evaluation at a poultry processing plant in Arkansas. The Occupational Safety and Health Administration submitted the request to determine health outcomes of an unintentional chlorine gas release in June 2011. NIOSH investigators visited the plant in June 2011, November 2011, and January 2012. The report includes the authors' findings and recommendations.

National Institute for Occupational Safety and Health (NIOSH) investigators evaluated environmental tobacco smoke (ETS) exposure at Bally's, Paris, and Caesars Palace casinos in Las Vegas, Nevada, at the request of casino employees. They measured exposures and surveyed employees about health symptoms. This report contains NIOSH's findings and recommendations.

The National Institute for Occupational Safety and Health (NIOSH) received a request for a health hazard evaluation at the Alcee Fortier Senior High School (AFSHS) in New Orleans, Louisiana. Employees were concerned about exposures to mold and lead paint. The employees reported difficulty breathing, chronic sinusitis, and immune system problems. This report contains NIOSH's findings and recommendations.