An explosion rocks Giant Mine at the height of a labor dispute, killing nine replacement workers in Yellowknife, Canada.

The Giant Mine was a gold mine located on the Ingraham Trail, 5 km (3.1 mi) north of Yellowknife, Northwest Territories. Giant Mine is within the Kam Group, which is part of the Yellowknife greenstone belt. Gold was discovered on the property and mineral claims staked in 1935 by Johnny Baker, but the true extent of the gold deposits was not known until 1944, when a massive gold-bearing shear zone was uncovered beneath the drift-filled Baker Creek Valley.