Royal Commission on the Health and Safety of Workers in Mines
The Royal Commission on the Health and Safety of Workers in Mines, informally known as the Ham Commission, was a 1974 Canadian royal commission founded to investigate and report on the safety of underground mines. The commission was created by Bill Davis as a result of the 1974 Elliot Lake miners strike and led by James Milton Ham.
Source: Wikipedia — Royal Commission on the Health and Safety of Workers in Mines (CC BY-SA 4.0)