Clear cutting system with natural regeneration in the maritime pine forests of the Landes. On right, naturally regenerated crop 6 years old; on left, mature crop being tapped fro resin; fire-line in centre
Chemical 'cooking' of wood chips yields cellulose pulp for gun cotton. Nitro-cellulose also made from wood pulp is the main constituent of modern high propellant explosives. Glycerol obtained from wood is a source of nitroglycerin.
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.