A production of The Documentary Guild in association with WGBH Boston for Nova ; WGBH Educational Foundation ; Executive editor, William Grant ; executive producer, Paula S. Apsell ; written, produced and directed by Rob Whittlesey and Noel Buckner
edited by J. Betterton, Haslemere Educational Museum, UK, J. Craig, Eni Upstream & Technical Services, Italy, J.R. Mendum, British Geological Survey, UK, R. Neller, Haslemere Educational Museum, UK, and J. Tanner, Haslemere Educational Museum, UK