Lead: Secondary Lead Smelter eTool
Local Exhaust Ventilation Diagrams » Bucket Elevator Ventilation
Belt speed less than 200 fpm, flow rate is 350 cfm/ft of belt width. Not less than 150 cfm/ft2 of opening. Belt speed over 200 fpm, flow rate is 500 cfm/ft of belt width. Not less than 200 cfm/ft2of opening.