Grange colliery (c.1860-1920). This pit was sunk around 1860 at Rushton Grange, near Cobridge, for coal and ironstone for Robert Heath’s Ironworks at Black Bull, Biddulph. Severe flooding took place in 1917, and this also affected the Racecourse colliery. Later, a large beam pumping engine, called the ‘King Edward Pump’ was installed to drain the Grange and Racecourse colliery.