380 LOGGING 
O'GoRMAN, J. S.: Unloading Log Cars with a Stationary Rig. The Tim- 
berman, August, 1909, p. 48. 
O'Hearne, James: Tilting Log Dumps. The Timberman, August, 1912, 
pp. 68-69. 
Van Orsdel, John T.: Cableway Loading System. The Timberman, 
July, 1911, p. 46. 
