Butterley Company file of documents of the Coal Mines Reorganisation Commission Including copy of inquiry into the amalgamation of Warwickshire Collieries, March 1934, proposals for the South Yorkshire Collieries Federation marketing scheme, 1934, proceedings of meeting between representatives of the Commission and the Coal Owners of the Derbyshire and Nottinghamshire Section, 10 Jan 1935, report from the Commission to the Secretary for Mines, Jan 1936, and minutes of the first meeting of the Advisory Council of the Anglo-Polish Reconstruction Limited, 11 July 1944 Mar 1934-Jul 1944