HOW TO TURN PENNIES GREENnickel nickel, metallic chemical element; symbol Ni; at. no. 28; at. wt. 58.69; m.p. about 1,453°C;; b.p. about 2,732°C;; sp. gr. 8.902 at 25°C;; valence 0, +1, +2, +3, or +4. . But there's an environmental cost, too, to minting new coins--namely, copper mining and refining refining, any of various processes for separating impurities from crude or semifinished materials. It includes the finer processes of metallurgy, the fractional distillation of petroleum into its commercial products, and the purifying of cane, beet, and maple sugar that involves huge amounts of power and water. That's the message from Coinstar, whose big coin-counting machines convert change into greenbacks or credit at supermarkets and drugstores. The company estimates there are some 150 billion coins going unused in the U.S.: $10 billion, or $90 per household, stashed in mason jars and under couch A couch, loveseat, sofa, settee, lounge, davenport or chesterfield are items of furniture for the comfortable seating of more than one person. Compare the joiner's settle, with its separate seat cushions. cushions. Cashing in just 10% of this amount, Coinstar says (table), would translate into sizable siz·a·ble also size·a·ble
Of considerable size; fairly large.
siza·ble·ness n. environmental savings.
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|Date:||May 2, 2008|
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