31. The North Sea Mine Barrage saw the laying of over 70, 000 mines during the summer of 1918. 32. The gunboats were destroyed with surface-to-surface missiles, sea mines , or rocket-propelled grenades. 33. Because deep sea mining is a relatively new field, the complete consequences of full scale mining operations are unknown. 34. In that reconstruction she obtained modern anti-aircraft armament and the equipment to carry and lay 100 sea mines . 35. It was uncertain if the guerrillas used surface-to-surface missiles, rocket-propelled grenades or sea mines . 36. Forced to work as a slave on a deep sea mining facility, Obi-Wan meets a Phindian named Guerra. 37. Drifting sea mines proved to be a considerable problem and resulted in the loss of numerous fishing boats and their crews. 38. Realising that the factory pollution is the source of the problems, Octo procures some old sea mines from a submarine. 39. Originally the tube is from Imperial Russia�s torpedo boat Bditelnyi, which sank after hitting a sea mine in November 1917. 40. In an attempt to seal up the northern exits of the North Sea, the Allies developed the North Sea Mine Barrage.
