Wisconsin Supreme Court December 6, 1945 (Squires v. Industrial Commission)

*191

Barlow, J.

The question involved in this controversy is whether'the coronary occlusion which Robert Squires suffered on September 8, 1943, was the result of a blow which he received on his chest September 2, 1943. This court has frequently held that the burden of proving facts essential to compensation is on the party seeking to establish liability.