| http://www.w3.org/ns/prov#value | - If a foam or gas-energized fluid is desired, any gas such as air, nitrogen, carbon dioxide and the like may be added. [0059] The fluid of this invention is particularly useful in the handling of particles generated during the excavation of a geologic formation, e.g. digging, drilling, blasting, dredging, tunneling, and the like, for example in the course of constructing roads, bridges, buildings,
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