THE BRITISH OXYGEN CO. LTD
... , , 0NE of the first of Hitler's SHIPPING secret weapons was the N. 3 magnetic mine which appeared in the Channel early in the war. Shipping losses became grave, but successful. But, as many ships experts were busy. A new word required degaussing, the job had was whispered and as quickly to be done quickly and a true hushed. Degaussing was on the weld of the copper was essential. British ...