A review of information published since 1995 on coal mine dust exposures and associated health outcomes
In 1995 in a major NIOSH review and report of recommendations, entitled Criteria for a Recommended Standard – Occupational Exposure to Respirable Coal Mine Dust. This Current Intelligence Bulletin updates the information on coal mine dust exposures and associated health effects from 1995 to the present. In part, the intent is to determine whether the 1995 recommendations, in this respect, remain valid, and to what extent, if any, modifications or additions are needed to those recommendations. The report does not deal with, nor discuss, issues of sampling and analytical feasibility nor technical feasibility in achieving compliance.
Source : http://www.cdc.gov/niosh/docket/review/docket210/default.html