http://www.legislation.gov.uk/id/ukpga/Geo5/16-17/28

http://www.legislation.gov.uk/ukpga/Geo5/16-17/28/section/21

Mining Industry Act 1926

An Act to make provision for facilitating the working of minerals and the better organisation of the coal mining industry, and with respect to the welfare of persons employed therein, and for other purposes connected with that industry.