| Description | From Apr 1927 it changes to No.2 Top Hard and No. 2 Ell Coal, with No. 2 Top Hard being changed from Mar 1930 to No. 3.
Columns for number of days worked, pit bank weight (coal tons, slack tons, total), average weight of tubs for coal and slack tubs, tubs of dirt drawn, tons of various qualities of coal weighed over truck machine (subdivided into types of coal, with percentages and total tons for month), difference of weight between truck and bank machines, tons of dirt and dross from screens, number of hands underground (stallmen, holers and loaders, day wage men, contractors not in coal, officers, absentees, total), number of coal tickets issued, tons of coal confiscated, number of ponies in pit (night and day, at work and off work, total), number of ponies on surface, number of boilers at pit (working, off work) and boiler consumption (home, foreign, proportion of slurry, total). |