Prepared for the British Admiralty by the Ministry of Information, 1943, this is a fascinating account of this essential activity during WWII. The British knew that it would also be read by the Germans, so the content seems to cock a snook in their direction. Something like, "Nasty things, those mines. You chaps go to all of this trouble, but we just get down to business and clean up your ugly mess."
The book belonged to a friend's father, who went on to become Base Commander at C.F.B. Kingston.