There are a number of key issues to consider when purchasing land for potential development, where underlying mines and minerals have been excepted from the title. Particularly: • ongoing rights to work the minerals: an exception of mines and minerals carries with it the powers necessary for working the minerals without these powers being expressly reserved. However, with certain rights, such as the right to let down or, in the case of open cast activities, destroy—the surface may not be included. It has been held that clear words need to be used where a right to break open the surface is required (McLean Estates Ltd v Earl of Aylesford) • ensuring the right of support for the development: when the proprietary rights in the surface and the minerals have been separated, by whatever means, the surface owner has, as incident