LOGGING IN THE DOUGLAS FIR REGION, 



71 



Butt chain. 



run from the main-line drum across the middle of the landing, some 

 of the angles formed being a little larger than a right angle. This 

 difficulty is generally 

 overcome by leading the 

 main line through a butt- 

 chain block (fig. 22) hung 

 to a stump standing in 

 line with the yarder and 

 landing and 50 feet or 

 more from the approach end of the landing. In operation the log is 

 yarded to the butt-chain block, the chokers are all unhooked from 



the butt chain, permitting the butt chain to 

 be passed through the block. Tlie chokers 

 are again hooked to the butt chain and the 

 log continues on its way to the landing. 



OPEEATION. 



After the ground around the landing has 

 been freed of large chunks of waste mate- 

 rial, the butt chain (fig. 23) attached to the 

 main line is run out to the first log on the 

 new road. The choker men put the chokers 

 (figs. 24 and 25) around the end of the logs. 

 After the load has been connected to the 

 butt chain, the hook tender or head-rigging 

 slinger signals for the engineer to haul in 

 on the cable and the load starts down the 

 road. When it reaches the butt-chain block, 

 as it will in most cases, the chaser signals 



for the engine to stop, unhooks the chokers from the butt chain, pulls 



the butt chain through the butt-chain block, rehooks the chokers to 



the butt chain, and signals 



for the engineer to go ahead. 



The load is then dragged 



to the landing, where it is 



disconnected by the chaser. 



or in rare cases, by one of 



the loaders. 



Where the logs are large, 



only one is hauled at a trip. 



In other cases it may be 



practical to yard as many 



as six. In general, the number depends on the volume of the logs, 



the size of the equipment, and the ground conditions. 



Fig. 24. — Choker with 

 socket. 



Pig. 25.— Chokoi- with eye. 



