Butterley Company correspondence file on stonedusting, including analysis reports on samples from it collieries Including loose printed reports, comprising interim report entitles "The Use of Wetting Agents for the Suppression of Air-Borne Dust", the 14th report of the Coal Dust Research Committee, the Monmouthshire and South Wales Coal Owners' Association, Dec 1944, and "Dust Suppression in the Lancashire Coalfield: First Report, A General Survey", the Lancashire and Cheshire Joint Coal Dust Committee, March 1945 Sep 1939-Apr 1946