Assorted printed material collected by the Butterley Company on silicosis Including reprints of papers at meetings of the Institution of Mining and Mining and Metallurgy, comprising booklet containing "Silicosis" by William R. Jones and "The Action of Harmful Dusts"by E. H. Kettle with discussions and remarks, "Volatile Solid Filters for Dust-sampling" by Janet W. Matthews and H. V. A. Briscoe, and "Recent Developments in Methods of Sampling Dusts" by H. L. Green, all dated 1934, loose copy of pamphlet "Memorandum on the Industrial Diseases of Silicosis and Asbestosis", printed by HMSO, 1932, and copy of resume of investigations carried out in the University of Birmingham Mining Research Laboratory during the past six months under grant from the British Colliery Owners Research Association, Jan 1935 1932-1935