Bul. 300, U. S. Dept. of Agriculture. PLATE VII. 
(fin 
a 
ee) 
‘as 
Be. 
yi 
K 
N 
4 
> 
4 
b 
b 
D-3320 
Fic. |.—CABLE SWING DRAG-LINE EXCAVATOR WITH CATERPILLAR MOUNTING. 
D-3078 
Fic. 2.—NONROTATING TYPE OF DRAG-LINE EXCAVATOR WITH WHEEL 
MOUNTING. 
