Glapwell Colliery No. 1 output from districts monthly record book Daily figures for 1 Jan 1942-31 Dec 1950. Recording statistics (with rows for each day of the month), with columns for date, individual panels (initially in columns for 4 South Drift and Top Hard Seam), total output, totals to date, number of shifts and days, number of tubs, weight per tub, shifts worked (coal face, haulage, datallers, others, total underground, total surface, total employed), tons (later hundredweights) per man (coal face, underground, employed), average tons per shift (weekly figures), average tons per day (weekly figures), number of dirt tubs, and remarks. Jan 1942-Dec 1950