Semitool Inc.

Semitool Inc. says it is laying off about 100 workers at its plants in Kalispell and Libby. The firm has about 800 Montana employees including 37 workers in Libby, so the layoffs will affect just under 13 percent of Semitool's Montana workforce. Workers were told to consider the layoffs permanent. Semitool is the third-largest employer in Flathead County and a leading manufacturer of wafer processing equipment for the semiconductor industry. Its headquarters are in Kalispell.