Thoresby Colliery pay book for surface and underground workers for the income tax year 1940-1941 Recording weekly wage payments, arranged by quarter, to individual workmen over the tax year, providing surname and initial only (no address or occupation recorded). Roughly in numerical order for employee numbers 3001-3307 (surface) and 1-1747 (underground); a few out of order at end of surface workers. Apr 1940-Mar 1941