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.
Gypsum, Colorado from the hills north of town. The Town of Gypsum is the Home Rule Municipality that is the most populous municipality in Eagle County, Colorado, United States. The population was 6,477 at the 2010 census. Gypsum is the home of an American Gypsum drywall plant and mine.