In 2007, according to the EPA, Americans dumped 2.2 million tons of electronic waste, including stereo receivers, into municipal landfills. The stereo receivers dumped into landfills included materials such as lead, nickel, cadmium and mercury. All of these materials pose a danger to humans and the environment if not disposed of properly. Recycling is a better choice for disposing of stereo receivers. This is due to a metric ton of circuit boards containing 40 to 800 times the gold ore mined in the United States. The same metric ton contains 30 to 40 times the amount of copper ore. Writer Bio
