Hydrostone District
Following the Halifax Explosion, many of the wood-frame buildings collapsed on their coal stoves and furnaces and caught on fire, which was a concern when reconstruction was being planned. To minimize the danger of fire, Adams and Ross proposed the use of non-combustible hydrostone for the reconstruction of this area. Hydrostone was a concrete block that was finished with crushed rock (granite, in this case) to approximate the appearance of cut-stone construction. The concrete blocks and their faces were amalgamated through a hydraulic pressing process, patented by a Chicago firm. Manufacture of the blocks was done in a plant located in Eastern Passage, Nova Scotia and the finished stones were hauled across Halifax Harbour by barge. -from Wikipedia
