There are four mints, not three. The following descriptions are general, because sometimes production of a specific type of coin may be shifted from one mint to another.
> Philadelphia and Denver make most circulating coins.
> San Francisco makes proof coins
> West Point makes commemorative and bullion coins, and occasionally mints cents (without mint marks) when demand is high.
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The 3 US Mints operating in 1972 were the Philadelphia, Pennsylvania mint, the Denver,Colorado mint and the San Francisco, California mint.
The three sovereign states located within the Italian peninsula are Vatican City, San Marino, and the Italian Republic. The Italian Republic is the largest of these three states with a population of 61,140,000, and the smallest is Vatican City with a population of 829.
The United States Constitution was ratified by unanimous vote from Delaware, Georgia, and New Jersey.
St, Thomas, St. John, and St.Croix
The United States
The Three Mile Island nuclear plant is located in Londonderry Township, Pennsylvania, United States.
The three major mountain ranges in the United States are the Rocky Mountains, the Sierra Nevada, and the Appalachian Mountains.
The top three schools of architecture are Cornell University, Syracuse University, and Rice University. These universities are located in the United States.
Three Mile Island is located near Harrisburg, Pennsylvania, United States. It is a nuclear power station that experienced a partial meltdown in 1979, resulting in one of the most serious nuclear accidents in the United States.
Three U.S. states that are south of Canada are Washington, Montana, and Minnesota. These states share a border with Canada and are located in the northern part of the continental United States.
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The three states located in the interior plain region of the United States are North Dakota, South Dakota, and Nebraska. These states are known for their flat topography and agricultural landscapes.
The three major molybdenum mines in the United States were the Henderson Mine located in Colorado, the Thompson Creek Mine located in Idaho, and the Questa Mine located in New Mexico
United States of America, Canada and Mexico.
Three countries located entirely within the Northern Hemisphere are Canada, Russia, and Japan.
The most recent avalanche reported in the United States was February 2, 2012. It was located near Silverton, Colorado. Three skiers were injured with one of them being killed.