| Description | For weeks ending 13 Jul 1920-14 Feb 1922. Recording weekly tonnages for Smalley, Mapperley (divided into Soft and Hard from Jan 1921), Furnace Road, and total for pit, with costs subdivided into categories for datal, heading, stall oddwork, haulage, corporal, extensions (only for Mapperley), with bonuses for stall, datal and haulage (only until July 1921); weekly number of shifts added at end: there are not figures for the period of strike from 1 April to 1 July 1921; after the strike, no figures are recorded for Mapperley. |