Career
He competed for Zambia at the 2004 and the 2012 Summer Olympics. Mumba participated in three IAAF World Championships in Athletics, in 2005, 2009, and 2011. Additionally, he also represented Zambia in two All Africa Games in 2007 and 2011.
He works as track and field coach at the Windward School in March Vista, California.
Mumba was the flagbearer for Zambia at the 2012 Summer Olympics Opening and Closing Ceremonies. He was born in Kitwe, Zambia.
He then was recruited by Oral Roberts University where he was a track standout. After college, he took up athletics professionally with Santa Monica Track Club.