When up or down conveyors must follow the prescribed mortar transport signal up the usual high containers collapsible floor, concrete containers and used cranes put up high, shipping containers are sturdy, collapsible, ease water does. When putting the barrel to the hopper dump, not be put through the early workers poured concrete. Horizontal rotation speed and holdup must slow down just for hanging wire bins at well almost upright. Only when concrete barrel in the mouth and a stable posture hopper a newly opened the bottom of the barrel with 1 m intervals. If using cranes or hoists for transporting concrete mortar onto the work area must be fenced in the range 3m2, table not for who does not have a duty to pass the night, must have light in right on the table all spaces
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