Folder of assorted papers relating to the dispute with the Standard Tonnage Committee Including hotes, graph showing Eckington Collieries rates per ton of disposable coal, rates of tonnage at various collieries and accompanying correspondence, 1935-1940, and cost of pumping at Eckington Collieries, 1930-1938. Folder labelled 'Standard Tonnage 1937'. 1937-1940