RAPID CITY, S.D. (AP) — The last living worker who helped construct Mount Rushmore National Memorial in South Dakota’s Black Hills has died. Donald “Nick” Clifford of Keystone, South Dakota, was 98.

Set in the Black Hills of South Dakota, Mount Rushmore may be one of the United States’ most recognizable landmarks, but as author Matthew Davis explains in “A Biography of a Mountain – The Making and ...

Though the names of the businesses have not yet been announced, we have a better idea of the industries represented.

MOUNT RUSHMORE - Although it's only about a decade old, the glass-and-granite dining hall at Mount Rushmore National Memorial will undergo a major renovation project worth more than $1 million.