In 1949, Jeffery Mine, belonging to the Canadian Johns-Manville Company employed nearly 2,250 workers. This immense hole is nearly a mile in diameter and about nine hundred feet deep. The dotted line represents the anticipated dimensions of the mine in twenty years. We can see that the open-pit mine is constantly eating away at the town. The tiny black dots at the bottom of the crater represent immense cranes and trucks that remove and transport the ore.
