Boulby is a hamlet in the Loftus parish, located within the North York Moors National Park. It is in the borough of Redcar and Cleveland, North Yorkshire, England. The hamlet is located off the A174, near Easington and 1-mile (1.6 km) west of Staithes. It was in the North Riding of Yorkshire until 1974, followed by the county of Cleveland until 1996. The village formerly had alum mining activity and is currently the site of Boulby mine, a 200-hectare (490-acre) site by Cleveland Potash Limited which produces half of the UK's potash output.