Join Us! What’s OK: Paper Clips, Staples, Acco Fasteners (metal prongs in manila folders holding papers in folder), Binder Clips, Rubber Bands, Window Envelopes, Manila Folders. Magnets are used to remove the metal particles. rubber bands and the clear material in window envelopes dissolve. What Must Be Removed: X-rays, Actual Photographs, Anything Covered in Plastic (like sheet […]