Kirkby-in-Ashfield, Nottinghamshire; Portland Colliery; 1820-1921; coal mine
New Hucknall, Nottinghamshire; New Hucknall Colliery Company; 1879-1944; colliery company
Ripley; Butterley Company; 1790-2009; iron manufacture, engineeing, colliery and brick company
Strutt family of Belper