p>Employee work areas include a surface sand mine, indoor control rooms, laboratories, non-air-conditioned mechanical shops and processing buildings, cabs of mobile equipment, elevated platforms, offices, and outdoor areas during all weather conditions. Follow strict adherence to all applicable Personal Protective Equipment safety programs including the use of hard hats, safety glasses, safety shoes, respirators, gloves, high visibility apparel, and harness and lanyard PPE for working from heights.