Chris Dunn is general manager of the Pipe and Pump Division of Crisp Industries. With more than 20 years of experience, Dunn has serviced many mining and fracking sites and is active in applications across North America. He may be reached at cdunn@crispindustries.com or 940-683-4070. Bill Schlittler, PE, is mining market manager at Cornell Pump Company—a Clackamas, Oregon, manufacturer of centrifugal pumps. Schlittler has more than 30 years of experience as a mining engineer, specializing in slurry applications. He may be reached at 503-653-0330 or bschlittler@cornellpump.com.