123 N.W.2d 793 INDEPENDENT SCHOOL DISTRICT NO. 877 v. LOBERG PLUMBING HEATING COMPANY. No. 38,735.Supreme Court of Minnesota. October 11, 1963. Contracts — exculpatory provisions — validity. 1. Exculpatory provisions of a building construction contract exonerating a contracting party from liability for damages resulting from his own negligence, not in contravention of public policy, are […]