<<< Back to Silica Link to Printing InstructionsPrinting Instructions | Text Version
Slides 1-10
Slides 11-20
Slides 21-30
Slides 31-40
Slide 41
Slide 42
Slide 43
Slide 44
Slide 45
Slide 46
Slide 47
Slide 48
Slide 49
Slide 50
Slides 51-60
Slides 61-70
Slides 71-78
« Previous  |  Next »
Slide 47


    Type: Picture Slide
    Content: Includes photo of workers performing operations with local exhaust systems installed.

    Speaker Notes: The most effective control of silica in the air is by the use of local enclosed exhaust ventilation. When a process of operation is enclosed, and the system is properly designed, a slight vacuum, creating a negative pressure, ensures that any leakage will result in the flow of outside air into the enclosure. A well-designed local exhaust system that encloses the process on all sides is best.