In the prosthetic industry a trans-tibial prosthetic leg is often referred to as a BK or below the knee prosthesis while the trans-femoral prosthetic leg is often referred to as an AK or above the knee prosthesis.
The City of Black Hawk is located 25 miles West of Denver. Through Historic Central City. 1  from Denver take Interstate 70 West. 2  I-70 exit 243 to Central City/Hidden Valley.
Keystone is a census-designated place (CDP) in Summit County, Colorado, United States. The population was 1,079 at the 2010 census. The Dillon Post Office (ZIP Code 80435) serves Keystone postal addresses. Keystone is the home of the Keystone Resort. Originally constructed in the 1970s by the Ralston Purina Company, it is now owned by Vail Resorts. The Keystone Resort ski area occupies 3 separate mountains: Dercum Mountain, North Peak, and The Outback.