Oxyliquits have numerous advantages. They are inexpensive to make, can be initiated by a safety fuse, and in case of a misfire, the oxygen evaporates quickly, rendering the charge quite safe in a short period of time. The first large scale deployment took place in 1899 during the building of the Simplon Tunnel, in the form of cartridges filled with diatomaceous earth soaked with petroleum, or an absorbent cork charcoal, dipped in liquid oxygen immediately before use. In another modification, the cartridge is filled with liquid oxygen after placement in the borehole.