32 
BULLETIN 681, U. S. DEPARTMENT OF AGRICULTURE. 
GQ 
in 
M 
i 
Temperature outside, 
58° F.; humidity, 61 
per cent. 
Started mill. 
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Nailed peepholes shut, 
thus jarring conveyor. 
Probably due to dust 
stirred up by sweeping 
in vicinity of hopper. 
2 attempts. 
9 attempts. 
Collected everything in 
system. 
3 attempts. 14.1 percent 
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