Dr. Shirley Ann Jackson --- 1995 Appointed chair of the U.S. Nuclear Regulatory Commission by President Bill Clinton. She's the first woman and first African-American to serve in that position.

Shirley Ann Jackson 

 FREng 

(born August 5, 1946

 In 1995 President Bill Clinton appointed Jackson to serve as Chairman of the US Nuclear Regulatory Commission (NRC), becoming the first woman and first African American to hold that position.

At the NRC, she had "ultimate authority for all NRC functions pertaining to an emergency involving an NRC licensee".^[6] 

In addition, while Jackson served on the commission she assisted in the establishment of the International Nuclear Regulators Association.^[7]