Automated processes are becoming more important. Enter companies like ARC Specialties (Houston) that deliver systems to help build oil and gas extraction equipment. "We make equipment that makes welds on rock bits, both structural and for wear-resistant coatings. We also build drill pipe that connects the rig to the bit, casings, centralizers, screens and pressure-relief valves," explains Dan Allford, president and CEO of ARC Specialties. To illustrate how no expense is spared chasing durability, Allford describes how drill bits use cobalt-welded inlays against silver bearings. "The only reason they do not use gold is that silver works better," explains Allford.

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