Environmental hazards such as chemicals, solvents, needles, needle containers, sharps, blood, body fluids, various infectious/communicable diseases, infectious medical waste, radiation, and/or radioactive materials and/or radioactive waste, proximity to moving mechanical parts. Tuberculosis Screening - Documentation of a two-step TB skin test within the past year OR lab verification of a negative TB Gold or T-Spot tuberculin test within the past 6 months.