While performing the duties of this job, the employee is occasionally required to stand; walk; sit; use hands to finger, handle, or feel objects, tools or controls; reach with hands and arms; climb stairs; balance; stoop, kneel, crouch or crawl; talk or hear; taste or smell. The ability to understand concepts involving statistics, probabilities and formula manipulation and perform basic calculations on volume, mass, atomic percentages, weight percentages, density, molecular weight of alloys and compounds and charge weights.