. Stamps engine house 0 Wheal Peevor was a very successful mine in Cornwall and the site has now been turned into a visitor and educational site where its three engine houses remain visible from miles around. This is the Stamps Engine House - stamps were used to crush the rock in preparation for further processing. Stamps engine house 0 Wheal Peevor was a very successful mine in Cornwall and the site has now been turned into a visitor and educational site where its three engine houses remain visible from miles around. This is the Stamps Engine House - stamps were used to crush the rock in preparation for further processing. Stamps engine house 0 Wheal Peevor was a very successful mine in Cornwall and the site has now been turned into a visitor and educational site where its three engine houses remain visible from miles around. This is the Stamps Engine House - stamps were used to crush the rock in preparation for further processing. 