The British exploded six of these at one time (27 March 1916) with the largest - of 95,600 lbs - being exploded by 1st Canadian Tunnelling Company along with 18 other mines to mark the start of the Battle of Messines on 7 June 1917. This particular mine resulted in the capture of St Eloi by the British 41st Division.
Two of the largest St Eloi craters - both detonated on 27 March 1916 - remain today and straddle the old German lines of 1916-17. Both of these are on private land and are used for fishing or swimming. A third, smaller, mine also lies nearby.
