GEAIN-DUST EXPLOSIONS, 



19 





Started mill and brought it 

 up to full speedy 2,200 

 revolutions per mmute. 



Started feeding oat hulls. 



Large handful of feed at 

 each attempt. 



















3 

 O 



















a 









lO 





o •* 



11 Tf 





£ 



3 

 ft 



a 



o 



^•^ 



IC lO U3 »o »o »o 





5 



r 



t>- 00 05 05 Oi 05 





§ 

 1 



"E 

 y, 

 o 



o 



1 



a 

 !a 

 O 







c 

 2 



1 

 c 



p 

 E 







■a 

 I 



o 



Flash through hopper handhole; 



flame 6 feet long. 

 Explosion of more force; flame 



spread more. 

 Explosion like that in explosion 2. 



Rvnlnsinn hftavifist. nf all 



.2 

 o 



-3< 



■a 







< 



c 



'5 

 c 



c 

 c 



1 



< 





c 



c 







1! 







C 



■i 



C 



c 



> 



a 



5 



2 



> 



s, 



% 

 ■n 

 a 



03 



3 



1 1 



£^-£ 



3 m <s 



.a-di 



One-fourth oat hulls and sweep- 

 ings, three-fourths elevator dust. 



I) 



Explo- 

 sion 

 No. 













r-l C<l CO-* 





£ 



i 





c 



<z 



c 



!5 



c 







c 





ii 





o . 



32 



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2°« 

 ■CO.. 





