He served with distinction until his death. He was awarded the Goldman Environmental Prize in 2002, together with Norma Kassi and Sarah James. He founded the Gwichyaa Gwich"in Ginkhe", a non-profit organization in Fort Yukon in 1970, also known as the "three G"s".
The organization was dedicated to fighting the environmental destruction of the Yukon Flats, specifically the proposed Rampart Dam project which would have flooded the entire Yukon Flats and thus forcing the dislocation of the Gwich"in people.
The project was halted.