There you go:
A map showing all the surrounding opencast sites, courtesy Banks Group:
http://www.banksgroup.co.uk/wp-conte...OLOGY-PLAN.pdf
"There are a number of locations within or adjacent to the study area that have
been subject to surface mining in the past, their boundaries are shown on the
geology drawing SR03. In chronological order these were:
Ferneybeds and North Linton 1943 to 1951
Druridge, 1951 to 1954
Wallis, 1951 to 1954
Chibburn and Radar North, 1952 to 1956
Radar North, 1953 to 1973
Radar South, 1954 to 1962