Applies to all unit movements of land material propelled and controlled by gravity. (IPCC. 2001. Climate Change 2001: Synthesis Report. Annexes. https://www.ipcc.ch/site/assets/uploads/2018/03/annex.pdf)
Mechanical pulp is made from wood by purely mechanical means, i.e. grinding or refining of chips; lignin and other impurities are not removed, and further processing (bleaching) is required if a white sheet is required. (TRG(121)/GICM, FAO, 2005. Glossary of Paper Terms, Institute of Paper, Printing and Publishing, UK, 2005 )
