6013836 Ice-fighters of the Atlantic watching the explosion in an iceberg caused by the firing of a 100-pound charge of thermit (b/w photo) by European Photographer, (19th century); Private Collection; (add.info.: Ice-fighters of the Atlantic watching the explosion in an iceberg caused by the firing of a 100-pound charge of thermit. Illustration for More Heroes of Modern Adventure by T C Bridges and H Hessell Tiltman (Harrap, 1929).); by Look and Learn.