Two volumes, bound as one. A detailed analysis for the various occupations within each colliery, including number of men, whether they occupy a colliery house, whether fire coal is provided, wages per shift, shifts worked per pay and hours per shift bank to bank. There is also information on the numbers of cottages at collieries and their number of rooms as well as special rules, agrreements to reduce wages, etc. Mounted errata slip in the Durham volume. Foxing to endpapers and final leaves, binding rubbed with a little wear to corners. Original owner's manuscript initials on label mounted on upper board.