Why is it beneficial to shred office paper rather than recycle?

There is a significant environmental impact by shredding sorted office paper vs. conventional recycling methods. Sorted Office Paper, (SOP) is paper that is kept separate from newsprint, magazines and cardboard. The micro-fibers in SOP have much more value, (800%) to the recycling industry than mixed office paper, (MOP) which cannot be economically sorted once it is all mixed together. SOP is baled and stock-piled at a recycling center and shipped to paper mills for processing into tissue paper. This year to date we have processed approximately 160,000 pounds of paper.

Specifically, the paper we bring to the recycling plant gets a second life as drywall, toilet paper, or tissue paper, etc!