Leslie,Roger,
The advantage of using a mobile document shredding service, like Shredway, is you don't have to disassemble the chart. Their monster takes the whole chart, including staples, metal binding clips, the works. I think even the PTO chipper will get issues with the strips of metal winding themselves around the shaft. It was way worth farming this out. Although I admit there are a number that I would love to destroy personally.
