Yes they burn them. Wood chips, they make them out of small trees dumbass. Do you really think its worth the effort to remove the needles and cones, chop up small limbs and haul them out of the forest? Did you ever see a chip truck coming out of the mountains, I know you haven't so don't make yourself look any dumber.
You should find another subject, you're just digging yourself in deeper exposing your ignorance.