Hardwick Colliery Company Limited The records for the company are arranged in the following series NCB/A/HAR/1 Hardwick Colliery Company accident record books, including for Holmewood, Ramcroft and Williamthorpe collieries and Hardwick By-Products, 1934-1951 NCB/A/HAR/2 Hardwick Colliery Company employee records, 1937-1947 NCB/A/HAR/3 Hardwick Colliery Company management records and accounts, 1902-1947 NCB/A/HAR/4 Hardwick Colliery Company agreements and ownership records, 1909-1960 NCB/A/HAR/5 Hardwick Colliery Company plans for pithead baths and canteens, 1940-1942 NCB/A/HAR/6 Hardwick Colliery Company group photographs, 1941-1947 1902-1960