Complex sentence: The area was surveyed around 1827 by Cornishmen with thirty years experience in the clay industry and they obtained a twenty-one year lease in 1830, from the Earl of Morley who owned the land, to work the area between Lee Moor and Shaugh Moor.
Split into simpler sentences: The area was surveyed around 1827 by Cornishmen with thirty years experience in the clay industry. They obtained a twenty-one year lease in 1830, from the Earl of Morley who owned the land, to work the area between Lee Moor and Shaugh Moor.