Hard disk drive (destroyed)
Hard disk drives are non-volatile, random access devices for digital data. They are comprised of rotating rigid plates or motor-driven spindle within a protective enclosure. An example of a complete hard disk drive is nearby. Because destruction of data on hard disk drives is largely ineffective by merely overwriting the data, they must be shredded before recycling. This is what is left after shredding. Mines periodically shreds old drives to ensure data security and privacy.