Butler v. Anaconda Copper Mining Co.

The employer, Anaconda Copper Mining Company, and the surety, Aetna Casualty and Surety Company, seek to vacate an award of compensation made by the Industrial Accident Board, and affirmed by the district court, to Leora Butler, based upon finding that her husband, Frank M. Butler, died as a result of rupture of artery caused by unusual strain sustained in the scope of his employment.

The defendants' essential contentions are: (1) That physicians who testified on behalf of the claimant and gave expert testimony at the hearing before the commission member were not shown to possess the necessary…