LUMBERING IN PINE REGION OF CALIFORNIA. 79 
averages for a month or more at a time a daily output of 180,000 in a 
10-hour shift. The dimensions of the material manufactured have 
considerable effect on the output ; the more thick stock the greater 
the output 
One method of increasing the output of a double-band mill is to add 
a resaw to the equipment. The mill is built somewhat wider, and the 
resaw is installed between the rear edger tables just aft of the edgers. 
The usual type of resaw is a 6-foot horizontal or vertical band. Mate- 
rial to be resawn is sent down the live rolls to an automatic transfer, 
which carries it to the feeding table of the resaw. Each plank is 
fed through the resaw in the direction of the front end of the mill. 
A third edger is placed beside the resaw for handling the resawed 
material. The usual mill crew is increased by 2 men feeding the 
resaw, 1 sawyer, 1 man at rear of resaw, 1 edgerman, and 1 man at 
trimmer conveyor. The average daily output is 160,000, an increase 
of about 35,000 because of the resaw. 
A less desirable means of making a similar increase in output is the 
the installation of a gang saw. The gang is set upon a solid founda- 
tion midway between the band saws and the edgers. A small deck 
slopes from the live rolls on either side to a set of feed rolls in the cen- 
ter. Cants are cut from time to time by the band saws and delivered 
from the live rolls to the feed rolls of the gang by automatic kickers. 
The cants are then slowly fed through the gang by the feed rolls, thus 
producing a number of boards at one time. A separate series of rolls 
extends from the gang to the trimmer conveyor. 
A gang-saw crew consists of 1 man at the feed rolls, 1 sawyer, 2 men 
at rear table, and 1 man on trimmer conveyor. The daily output of a 
double-band mill with a gang is about 160,000 feet board measure. 
The common type of gang saw is capable of cutting a cant 28 inches 
wide and 12 inches thick. The cost f . o. b. the factory is about $5,000. 
It produces perfectly sawed lumber, but it is impossible to saw to pro- 
duce higher grades, as is done with a band saw. Thus gang saws are 
generally not regarded with favor in the sugar and yellow pine region 
where the profit is made from the upper grades. A gang saw can, 
however, be used to advantage upon an operation producing enough 
low-grade logs, suitably only for common or box lumber, to supply it 
all the time. Otherwise there is a tendency to run better-grade logs 
through it at times, which results in a loss of uppers. 
A mill of an unusual type in this region, there being but two in 
operation, consists of a single band and a gang. The operation is in 
general the same as in a double-band and gang mill. The average 
daily output for a single shift is from 100,000 to 120,000. 
Electric drive for sawmills has not been introduced as yet on an 
extensive scale, there being but one sugar and yellow pine mill so 
equipped. The power is generated in the engine room of the plant 
