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Image Number K8227-2

Chemists William Marmer and Maryann Taylor look at material shaved from the underside of hides. More than 60,000 metric tons of this waste—shavings containing chromium-III sulfate used in the tanning process—are generated each year in the United States.

Photo by Peggy Greb.

640 pixels wide: (k8227-2.jpg)

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