| Description | Comprising returns relating to the Coal Mines Act of 1911 covering the power used by the equipment onsite, including notes of advise as to how to fill in the return form; census returns relating to production/tonnaged raised from the seams; returns relating to the Coal Mines Act of 1911 covering the output generated by employees, machinery and other equipment; returns relating to the Coal Mines Act of 1911 covering the equipment, such as electrical apparatus, lighting and horses; returns relating to both the Coal Mines Act of 1911 and the Mining Industry Act of 1920 covering roadways support and at the working face; returns for the Coal Mines Act of 1911 and the Mining Industry Act of 1920 covering safety equipment, pit-head baths and horses; returns relating to the Coal Mines Act of 1911 and the Mining Industry Act of 1920 covering output and number of employees; the Mining Association of Great Britain return covering shafts, shifts worked, output, number of employees, free coal, housing and recruitment. |