BFI Screenonline: Mining Review 4/7: The Magnet (1951)
#0183;#32;Suggested by a visit to the National Coal Board''s research laboratory at Stoke Orchard, this Mining Review item (filmed from 5th8th December 1950) examines the technology behind a new type of safety lamp lock. As the makers of Mining Review would have been only too aware from their own experience of filming down mines, there were stringent safety precautions in place regarding lighting