d. When the bin Is full, spread the tarpaulin over the screens. Loop the tie-down ropes over the hooks
2-6. Filling the Cement Bin.
Cement dust can be harmful. During loading operations or any time there is cement dust in the
air, take precautions to avoid direct inhalation of the dust. If you must be in the immediate vicinity
of dust, wear a dust mask; or if none is available, cover your nose and mouth with a cloth.
CEMENT DUST CAN CAUSE SERIOUS LUNG PROBLEMS.
a. Open the air shutoff valve and the screen vibrator valve by turning them all the way counterclockwise (fig. 2-18).
Figure 2-18. Air Shutoff Valve.