Chapter 10. New Developments in Crystalline Silica Regulation

  1. John Kieffer
  1. Robert E. Glenn

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294598.ch10

A Collection of Papers Presented at the 60th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 21, Issue 1

A Collection of Papers Presented at the 60th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 21, Issue 1

How to Cite

Glenn, R. E. (2000) New Developments in Crystalline Silica Regulation, in A Collection of Papers Presented at the 60th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 21, Issue 1 (ed J. Kieffer), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294598.ch10

Author Information

  1. National Industrial Sand Association

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375662

Online ISBN: 9780470294598

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Keywords:

  • crystalline silica;
  • amorphous;
  • noncrystalline;
  • shaping tools;
  • weapons

Summary

The reclassification of crystalline silica by the International Agency for Research on Cancer to the category of “carcinogenic to humans” seems to have initiated a flurry of regulatory activity regarding silica by the Occupational Safety and Health Administration, the National Toxicology Program, and the American Conference of Governmental Industrial Hygienists. OSHA has announced in its regulatory agenda that it will be promulgating a comprehensive health standard for crystalline silica. The NTP has recently reviewed the medical literature regarding the carcinogenicty of crystalline silica and has published its intent to reclassify respirable crystalline silica from “reasonably anticipated to be a carcinogen” to the category of “known to be a carcinogen.” Finally, the ACGIH is evoluating its classification for crystalline silica and is considering cutting in half the threshold limit value for quartz. The specifics of these actions and the current status will be reviewed.