What is the word for the flecks of debris formed when you use an eraser?

Perhaps they are called 'rubber shavings'.

http://www.freepatentsonline.com/3948009.html

Or eraser shavings...

http://wiki.answers.com/Q/Why_are_your_eraser_shavings_hot

Back in the days before CADD we used a product called Scumex, which was basically eraser crumbs, to remove excess graphite. It's been a long time, but I believe we may have called the bits produced from an eraser "scum" even though it was the graphite particles that were actually the scum you wanted to get rid of. I can't find too many references to it, other than the well known practical joke about replacing some poor guy's Scumex with Parmesan cheese.

http://www.caddmanager.com/Management/Revit-Revolution.html

Just ran into this high tech term: Eraser waste.

But most are calling it "Eraser GRIT."

http://www.epinions.com/content_98534657668

http://www.epinions.com/review/Charles_Leonard_co_71541_Manual_Erasers_Fits_All_Standard_Size_Pencils_Pink/content_421167009412

http://books.google.com/books?id=KeQPAAAAYAAJ&pg=PA27&lpg=PA27&dq=eraser+grit&source=web&ots=9IFk_q5GRt&sig=raH0jz7cOymNvjJTNq8AvTO28n0&hl=en