Court of Appeals of Oregon January 16, 1978, No. A 7705-06737, WCB 76-876, CA 8939 (Powell v. Edward Hines Lumber Co.)

PER CURIAM.

In this worker’s compensation case the primary issue is a factual one — did claimant prove by a preponderance of the evidence that his original compensable back injury had been aggravated? We agree with the triers of fact below that he did not.

Affirmed.