Groundwood pulp has a high yield of approximately 95 % and has a high level of opacity but its strength is relatively low, due to its lignin content. (Siemens AG )

Acidity is one of the most important causes of damage in paper as it weakens and eventually destroys the fibres that make up the paper. As a result, paper made from groundwood pulp breaks down rapidly from within. The first sign of this is that the paper becomes yellow, then brown, and increasingly brittle. (Victoria and Albert Museum)

Processing wood fibre obtained from four separate sources, including thermomechanical pulp (TMP), recycled pulp, groundwood pulp and kraft pulp, the mill produces more than 540,000 ADMt of newsprint each year. (borealforest.org)