This pamphlet discussed becoming a NIOSH B-Reader. NIOSH B-Reader approval may granted to physicians who demonstrate proficiency in the classification of chest X-rays for pneumoconioses using the International Labour Office (ILO) Classification System. A NIOSH-B Reader Certification Examination was available which was developed in response to the mandates of the Federal Mine Safety and Health Act. Examinations were offered monthly in Morgantown, West Virginia. In preparation for the examination, NIOSH recommended some pretest study. Once a person fails the examination, they must wait a full year before trying to pass again. The examination was considered to be difficult, consistently demonstrating a 50% fail rate. The Syllabus for the NIOSH Self Study or a NIOSH sponsored seminar may be obtained by mail. Seminars usually have been held annually.