The 3R Program offers recycling for laser toner cartridges.  Simply put the old cartridge back in its box, mark "RECYCLE," and send it through the campus mail. If your office uses an ink jet, you can get free, postage-paid envelopes to recycle your used cartridges.  Just drop the cartridge in the envelope, seal, and mail.  Call us at 753-0352 to receive these envelopes. Cathode Ray Tubes (CRTs) found in computer screens and TV's are at least 20% lead oxide by weight. Electronics also contribute significant levels of cadmium, arsenic, zinc, mercury, and selenium to landfill leachate. Pound for pound, computers contain three times as much precious metal as modern mining ore. It is estimated that America uses 16 million cartridges a year.  About 14 million of these end up in landfills. Cartridge recycling is a $90 million a year business. Because technology is changing so rapidly, most used computer equipment has little resale value. These computers are often more than adequate for teaching basic computer literacy, however, and would make a great donation to schools or clubs. A computer contains an amazing number of valuable metals.  They include: gold, silver, platinum, palladium, cobalt, nickel, copper, lead, steel, and aluminum.  Computers also contain glass and a variety of plastics.