I was asked recently to write a short essay on environmentalism to be published in a book on âKey Concepts in Critical Management Studiesâ to be published by Sage later in 2010. I hope itâs useful for those who want a little bit of history and critical understanding of environmentalist as a concept and a movement.
Hand sorting the 1982 Copper from the Zinc pennies. 1982 was the transition year for the US Mint to stop making pennies from copper and switch to zinc. There... Hand sorting the 1982 Copper from the Zinc pennies. 1982 was the transition year for the US Mint to stop making pennies from copper and switch to zinc. There are sorting machines that can be purchased to do this work, but if you dont have a machine, your ears can do the job!
At the very least, a change in the composition of the American penny seems likely. In 1982, Congress authorized the Treasury to make such a change, and it did. Before then, pennies were 95 percent copper and 5 percent zinc, Mr. White says. Pennies manufactured since have been copper-plated zinc, with zinc making up 97.5 percent of the coin and copper only 2.5 percent. Steel, which was used in pennies in World War II, could be substituted next.