Kirkby-in-Ashfield, Nottinghamshire.; Kirkby Colliery; 1888-1968; coal mine
Kirkby-in-Ashfield, Nottinghamshire; Portland Colliery; 1820-1921; coal mine
Ripley; Butterley Company; 1790-2009; iron manufacture, engineeing, colliery and brick company
Somercotes; Upper Birchwood Colliery; Butterley Company; 1842-1926; coal mine
National Coal Board