BULLETIN 663, IT. S. DEPARTMEXT OF AGBTCTLTTBE. 
remove a tray full of equipment for cleaning with one raising of 
the window. Large apparatus, such as shell cans, which are cleaned 
only at night, are carried through the anteroom into the sterilizing 
room. A small door (fig. 3) may be used for passing sterilized cans 
into the breaking room. 
\ '-DaHta 
X* 
f Elevation in 1 * Wash Room * 
Section 
Fig. 4.— Detail of transfer window between breaking and sterilizing rooms. Be sure to build the weight 
boxes on the sterilizing room side of the partition. 
VENTILATION. 
The candling and breaking rooms should be furnished with a supply 
of fresh, dry air. If the plant is located where the humidity is com- 
paratively low, a stream of fresh air can be forced into the rooms 
through several layers of cheesecloth, by means of a suction fan. 
The ideal method is the bunker system by means of which the air 
is cooled on bunker coils and admitted through pipes into the breaking 
and candling rooms. When this method is the only source of refrigera- 
tion for the rooms, care should be taken that the bunker room is of 
adequate size to provide sufficient refrigeration during the warm 
summer weather. 
In small candling and breaking rooms refrigerated with brine coils, 
an electric fan is usually sufficient to keep the air fresh, especially if 
the doors are opened frequently for the admission or transmission of 
material. The difference in temperatures within and without causes 
a rapid change of air. 
