Loss of Lemmings: Three
After the first steam pipe blows the Lemmings and they start to land stunned, break through to the right by making the first Lemming into a Flame Thrower. After it then lands in the pit to the right, make it a Bomber. Let them be blown all the way round and back into the middle where they congregate, then use the remaining Flame Throwers to free them to the left.