| Description | Summaries of statistics for West Midlands Division. Lists: Lighting below-ground; Horses used below-ground; Supports on all roadways below-ground and at the Working Face; Manriding installations in regular use; Steam and compressed air power; Electrical power and apparatus; Number and aggregate H.P. of motors installed; Steam, compressed air and internal combustion engines; Power equipment. Statistics collected for collieries in Warwickshire, South Staffs & Shropshire, Cannock Chase and North Staffs Areas. Also contains list of approved safety lamps. |