Lumber and saw wood production in Soviet Union was a pretty big thing. First because there was (and is!) a huge amount of natural resource for this, and the second is because of the constant state of construction going on. Also the foreign neighboring countries lack such endless woods
on their territory, so they had to buy the wood from somewhere and the Soviet state was exporting. Arkhangelsk city was one such center for this industry, and these are the photos from back in 1958, showing the scale of how much wood was prepared and handled.