Letter

Jackson, 1980, Review of ‘Certification of NDT personnel in Britain — a consultative document’, NDT Inter, 13, 200, 10.1016/0308-9126(80)90078-4 Simpson, 1980, Correspondence, Brit J Non-destructive Testing, 22, 252 ASNT Board of Directors, 1980, ASNT position paper on the use of SNT-TC-1A and the ASNT Level III certification programs, Materials Evaluation, 38, 11 Lavender, 1977, Training of non-destructive testing operators, Welding and Metal Fabrication, 301