Walk(Move, Traverse), Use hand/fingers to handle or feel (Operate, Activate, Use, Prepare, Inspect, Place, Detect, Position), Climb (stairs/ladders) or balance (Ascend/Descend, Work atop, Traverse), Stoop, kneel, crouch, or Crawl(Position self(to), Move), Talk/hear(Communicate, Detect, Converse with, Discern, Convey, Express oneself, Exchange information), See (Detect, Determine, Perceive, Identify, Recognize, Judge, Observe, Inspect, Estimate, Assess), Pushing or Pulling, Reaching. Using a push/pull system, we treat customers' coiled sheets of carbon-steel with hydrochloric acid, cleaning the product of rust, scale, & debris.