Area rock shops. The Southern Hills are a rich lode for rock lovers, as evidenced by the number of rock shops -- from rustic to refined -- that grace the area. Here's a list of rock shops of western South Dakota: Rapid City -- Indigo Iris Rocks & Stones (484-2465). Custer -- Ken's Minerals (673-4935); Scott's Rock Shop & Free Museum (673-4859); Wild Bill's Antique Mall & Rock Shop (673-4186); the Rock Shop.
Answer Wiki. The average is 18 but generally ranges between 17 and 19, using for oneâs population students that go straight to college from high school. For gifted children or adults that never went to college, it can go as low as 12 years of age to as high as human life expectancy.
In 1797, Congress seated its youngest-ever member, 22-year-old William Charles Cole Claiborne of Tennessee, even though he didnât meet the constitutional age minimum. In 1869, the average age of members of Congress was just 45, far younger than any Congress of the 20th century. Life expectancy likely had something to do with the 19th-century preponderance of younger men: The average American born in 1900 expected to live only 49 years, compared to more than 78 today.