A typical Health Hazard Evaluation (HHE) involves studying a workplace, such as a particular department in a factory, industrial plant, or other worksite. The study is done by NIOSH in response to concerns expressed by employees, employee representatives, or employers, to find out whether there is a health hazard to employees caused by exposure to hazardous materials (chemical or biological contaminants) in the workplace. NIOSH also evaluates other potentially hazardous working conditions, such as exposures to heat, noise, radiation, or musculoskeletal stresses, for example. To date, site visits have been conducted for approximately half the nearly 10,000 HHE requests received. "Formal" final reports (formally printed and available through NTIS) are typically prepared when results/recommendations from an HHE have potential impact on an audience wider than the visited facility. The formal final reports begin with a "Summary" that presents the basis for the HHE request, the general methodologic approach, and the most salient environmental and/or medical results. At the end of this section is a statement on whether a health hazard was determined, followed by keywords. The body of the reports is arranged by sections; Introduction, Background, Methods, Evaluation Criteria, Results, Discussion, and Recommendations. More than 2,600 formal final HHE reports have been written since the HHE program was initiated in 1971. Contained on this two-disc CD-ROM set (DHHS (NIOSH) Publication No. 97-144) is the full text of 505 Health Hazard Evaluation formal final reports completed from 1990 through 1996. The CD-ROMs were created by scanning a printed copy of each page and using optical character recognition to create an electronic text of that page. Each page of electronic text was then linked to the actual image (picture) of that page. Each document is identified on the discs by a three-part name: HHE number, site identification information, and site location. Each disc is independent and must be searched separately. After initial installation, the discs can be used in any order. Each disc contains only those documents indicated on its label and an index specific to the documents on that disc. The software used to search the NIOSH Health Hazard Evaluations CD-ROMs is a Windows-based program called Pundit. Pundit contains a variety of features that facilitate your use of the discs. For example, a list of all the documents on each CD-ROM can be automatically generated using the Browse option. Pundit also supports full text searching including a fuzzy search capability and a vocabulary option.