ASTM Committee E07 on Nondestructive Testing was formed in 1938. E07 meets twice a year, in January and June, with approximately 100 members attending four days of technical meetings and concludes on the fifth day with a plenary session of the Main Committee. The Committee, with a membership of 535, currently has jurisdiction of 247 standards, published in October in the Annual Book of ASTM Standards; Volume 03.03 and Volume 03.04. E07 has 12 technical subcommittees that maintain jurisdiction over these standards. Information on this subcommittee structure and E07's portfolio of approved standards and Work Items under development are available from the List of Subcommittees, Standards and Work Items below. These standards have, and continue to play, a preeminent role in all aspects relating to traditional and emerging methodologies for Radiology (X, Gamma and Neutron), Liquid Penetrant, Magnetic Particle, Acoustic Emission, Ultrasonics, Electromagnetics, Leak Testing, and Reference Radiological Images.