Bush v. Bonners Ferry School Dist. No. 101

*621SHEPARD, Justice.

This is an appeal from an order of the Industrial Commission which denied appellant’s claim for workmen’s compensation benefits. We affirm.

The facts are essentially undisputed. Claimant-appellant Bush had been employed by respondent School District in a janitorial capacity since August, 1976. In April and May of 1977, he experienced three separate incidents of chest, neck, shoulder, arm and jaw pain. The first incident occurred while he was assisting in the lifting of a heavy piano, the second while he was attempting to fold and carry heavy canvas tarpaulins, and the third…