What are the workers called , that trim wood ? HELP ASAP . READ VVV BELOW . to understand.?

i have this thing on my homework . and it says 3 kinds of workers were involved with making a pencil so far . and first you need cedar wood in a forest, _____ <--- who works to cut down trees . then it gets moved down the the saw mill __________ <--- who works in the saw mill ? please help . A S A P !