WORKING CONDITIONS: ENVIRONMENT: Occasionally: Extreme heat and cold, wet and/or humid conditions, vibration, pressurized equipment, burning materials, moving objects, high places, fumes/odors/mists, gases, toxic conditions. Frequently: Extended days, inside, outside, temperature changes, mechanical & electrical equipment, confined areas, noise, dirt/dust, other hazardous conditions, human excrement, blood, urine, mucous, tissue.