SPI

machines, namely portable and stationary soil remediation plants for processing oil-contaminated soils, comprising material feed bins, bar grizzly feeders, clay shredders, scalping screens, conveyors, weigh idlers and gravity take-ups, rotary drum mixers and vortometric burners, dust collectors, dual shaft pugmills, screw augers, secondary treatment chambers and afterburners, heat exchangers and evaporative gas cooling chambers, baghouses, relocatable control houses and computerized plant controls sold as a unit