YOUNG, Judge.
Hensel Phelps Construction (Phelps) seeks review of a Workers' Compensation Board order which affirmed the referee's order holding it responsible for claimant's back condition. The issue is whether claimant suffered an aggravation (the responsibility of Phelps) or a new injury (the responsibility of Kalt Manufacturing Company (Kalt)). We affirm.
On April 4, 1980, claimant suffered a dorsal lumbar strain while working for Phelps. He was awarded...
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