The Common Ground Alliance (CGA) estimates there are over 20 million miles of gas, electric, water, sewer, and telecommunication lines buried in the United States.
Air excavation has become a preferred method for digging on many jobs ranging from utility work to advanced tree care. Dravo Corporation located in Pittsburgh, PA developed a specialized air lance tool for excavation, later named AirSpade.
Excavating with the AirSpade offers a number of advantages over conventional tools such as picks, shovels, and backhoes.
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