LUMBERING IK PINE REGION" OF CALIFORNIA. 75 
width may be either 12 or 14 inches. The length of a saw for a 
9-foot band is 56 feet, and for an 8-foot band the length is 45 feet. 
The cost f. o. b. San Francisco is $2.25 per foot for 12-inch widths, and 
$3.15 per foot for 14-inch. 
As the slabs and boards are sawed from the log they fall upon 
live rolls, consisting of iron cylinders 1 foot in diameter and 2 J or 3 
feet in length, spaced 4 feet apart in two parallel series extending 
from each band saw to the trimmer conveyor in the rear of the mill. 
The rolls are rotated continuously in the direction of the rear of the 
mill by means of shafting and gears. An off -bearer stands behind each 
saw for the purpose of seeing that the boards and slabs fall on the 
rolls free of the saw. 
The boards pass down the live rolls until they reach the edgers^ 
where an automatic transfer removes them to the edger table. An 
edger is provided for each band saw. The usual type is a 60-inch gang 
with four or five circular saws. Two men are required at each edger, 
a pointer and an edgerman. The boards are fed through the edger, 
the saws having first been adjusted to cut off the edgings and saw the 
boards into the widths desired. 
From the edgers the lumber and edgings pass to a double series of 
live rolls, about 6 feet wide and 30 feet in length, termed rear edger 
tables. Underneath these tables there are a number of conveyor 
chains working toward the side of the mill where the slash saws are 
located. Two or three men are stationed at the rear edger tables for 
shoving edgings off onto the slasher conveyor. One of these men 
also tends the slasher. Slabs do not go through the edgers but pass 
directly down the rolls and are thrown off on the slasher conveyor by 
the same three men. The slasher consists of from five to seven circu- 
lar saws set either 3 or 4 feet apart on a shaft. The slabs and edgings 
pass under these saws and are cut in lengths for cordwood or lath 
bolts. 
The rear edger tables deliver the lumber to the trimmer transfer, 
where another chain conveyor moves the boards to the trimmer. The 
trimmer consists of 10 or 11 circular saws, mounted in a row. It may 
be either of the underneath or overhead type and be either hand or 
pneumatic lift. Its function is to trim off the ends of the boards to 
standard lengths. After going through the trimmer the boards pass 
to the sorting table, where the grading and sorting is done. The 
crew at the trimmer consists of the trimmerman, who adjusts the 
saws, and two men who arrange the boards on the trimmer table. A 
third man is often necessary on the trimmer conveyor. 
A short conveyor is located behind the slasher for the purpose 
of transporting the slabs and edgings to the main conveyor and 
refuse burner. Lath bolts and wood are commonly picked out of this 
conveyor, when utilized. On the lower floor of the mill is located all 
