It was announced in July 2006 that the St Just mining district and the rest of the historic mining areas of Cornwall had become the Cornwall and West Devon Mining Landscape World Heritage Site .
Mines within the area included Levant Mine , Botallack , and Geevor Tin Mine ( which closed in 1990 ) It was announced in July 2006 that the St Just mining district and the rest of the historic mining areas of Cornwall had become the Cornwall and West Devon Mining Landscape World Heritage Site .