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Oliver Hall——Works at the United Nations Office on Drugs and Crime, Lives in Vienna, Austria.
A CD is 4.72 inches (
120 millimeters) in diameter and .047 inches (1.2 millimeters) thick. The positioning hole in the middle is .59 of an inch (15 millimeters) in diameter. A CD usually weighs around .53 of an ounce (15 grams). A standard CD can store up to 74 minutes of data.
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