Softwood

[1] The main softwood species (pines, spruces, larches, false tsugas) also have resin canals (or ducts) in their structure.

[citation needed] Several specific natural, macroscopic and microscopic features of wood are used in the identification process of a softwood species.

[5] Softwoods are generally most used by the construction industry and are also used to produce paper pulp, and card products.

[6] In many of these applications, there is a constant need for density and thickness monitoring and gamma-ray sensors have shown good performance in this case.

Softwood is the source of about 80% of the world's production of timber,[10] with traditional centres of production being the Baltic region (including Scandinavia and Russia), North America and China.