Local Appeal Tribunal case file for Joseph Warren, aged 46, Filler at Grassmoor Date of birth: 30/04/1912 Marital status: Not given Address: 29 Birkin Lane, Grassmoor Type of benefit claimed: Special Hardship Allowance Type of injury: Injury - knee Further information: Wears elastic kneecap. Heavily impregnated with wintergreen'. The relevant injury to the knee was in December 1948 and a final disability assessment of 13 per cent for life had been awarded by 1955, as Warren was unable to return to his coal face work and had taken a light job as a belt cleaner. A letter from the Training Officer at Grassmoor colliery states Warren had declined appointment as a shot firer on account of his knee disability. 1959