Brown & Root Industrial Services - - Responsibilities: Operate jackhammers and drills to break up concrete or pavement; Position, join, align and seal structural components, such as concrete wall sections and pipes; Shovel cement and other materials into portable cement mixers: and mix, pour, and spread concrete; Tend to machines that pump concrete, grout, and sand; Load, unload, and identify building materials, machinery, and tools, and distribute them to the appropriate locations, according to project plans and specifications