Minnesota Mining & Manufacturing Co. v. State Accident Insurance Fund

A dispute between two insurance carriers as to which of them must bear the costs of the claimant’s present disability is the crux of this workmen’s compensation case. In order to resolve that dispute this court must, in effect, determine whether claimant’s existing disability is attributable, wholly or in part, to a compensable injury suffered by her in June 1974 while she was employed by Minnesota Mining and Manufacturing Co. (3M).

Having considered the testimony of the claimant and all relevant medical evidence, the referee concluded that her low back problem reflected a "general worsened…