Malleable Iron Range Co. v. Industrial Commission

The employee was afflicted with arteriosclerosis in an advanced degree. This, of course, rendered him liable to just such a result as did occur. There is testimony describing the load which Grant was drawing, and characterizing the work of drawing such a load up that particular grade as hard work. To a man in the condition Grant was in, the risk of serious illness or death was increased by unusual exertion. Medical testimony was given to the effect that increased exertion, increased the hazard of a rupture.

The evidence leaves no room for doubt that the artery was extremely brittle and the…