Review of the U.S. Navy's Exposure Standard for Manufactured Vitreous Fibers -- Copyright -- PREFACE -- Contents -- SUMMARY -- THE SUBCOMMITTEE'S APPROACH -- THE SUBCOMMITTEE'S EVALUATION -- Manufacturing Processes, Chemical Composition, and Classification -- Sampling, Analytical Methods, and Exposure Assessment -- Biopersistence of Vitreous Fibers -- Toxicological Studies -- Epidemiological Studies -- Evaluation of the Navy's Exposure Standard -- Information Gaps and Recommendations for Future Research -- 1 INTRODUCTION -- BACKGROUND -- THE SUBCOMMITTEE'S TASK -- ORGANIZATION OF THE REPORT -- 2 MANUFACTURING PROCESSES, CHEMICAL COMPOSITION, AND CLASSIFICATION -- GLASS FIBERS -- MINERAL WOOL -- REFRACTORY CERAMIC FIBERS -- CONCLUSIONS -- 3 SAMPLING, ANALYTICAL METHODS, AND EXPOSURE ASSESSMENT -- SAMPLING AND ANALYSIS -- EXPOSURE ASSESSMENT -- CONCLUSIONS -- 4 BIOPERSISTENCE OF VITREOUS FIBERS -- DEFINING BIOPERSISTENCE -- ASSESSING BIOPERSISTENCE -- MEASURING BIOPERSISTENCE -- CONCLUSIONS -- 5 TOXICOLOGICAL STUDIES -- INHALATION STUDIES -- INTRATRACHEAL INSTILLATION -- INTRACAVITARY INJECTION -- CONCLUSIONS -- 6 EPIDEMIOLOGICAL STUDIES -- MANUFACTURED VITREOUS FIBERS -- REFRACTORY CERAMIC FIBERS -- CONCLUSIONS -- 7 EVALUATION OF THE NAVY'S EXPOSURE STANDARD -- 8 INFORMATION GAPS AND RECOMMENDATIONS FOR FUTURE RESEARCH -- REFERENCES.