Caterpillar D7 85HP crawler tractor with tree dozer attachment. Cable-operated. First of its kind in the Commonwealth. Weight 16 ton. Would build on the average 2 mile of track 10' wide per day. Owned by Forests Commission
Caterpillar Diesel 50, with bulldozer building a road 24 miles back into inaccessible mountain country Santa Barbara National Forest U.S.A. (Photo W. Adams)
Character of the bark as it is brought to the factory from the forest. On the right is a piece about 4' in length stripped from the tree in one section.