D2530 | Butterley Company of Ripley, colliery owners, iron founders, mechanical engineers and brick... | [20th cent] | Butterley Company of Ripley, colliery owners, iron founders, mechanical engineers and brick manufacturers | Derbyshire Record Office |
D2530/1 | Map, showing Main Soft Coal Workings marked with dates mainly 1880's (but some earlier) - c1935 | c1935 | Butterley Company of Ripley, colliery owners, iron founders, mechanical engineers and brick manufacturers | Derbyshire Record Office |
D2530/2 | Map, labelled Kilburn and showing Butterley Company's Kilburn Coal Workings, with dates c1915-1940 | c1940s | Butterley Company of Ripley, colliery owners, iron founders, mechanical engineers and brick manufacturers | Derbyshire Record Office |
D2530/3 | Map, showing Furnace coal, marked 1906-1934 (mutilated, key missing) | c1930s | Butterley Company of Ripley, colliery owners, iron founders, mechanical engineers and brick manufacturers | Derbyshire Record Office |
D2530/4 | Map, showing Butterley Company's Deep Hard Coal Workings, marked 1863-1931 | c1930s | Butterley Company of Ripley, colliery owners, iron founders, mechanical engineers and brick manufacturers | Derbyshire Record Office |