(322 P.2d 1046) NATIONAL CONSTRUCTION COMPANY v. JOE HOLT, AS THE HOLT ELECTRIC COMPANY. No. 18,011.Supreme Court of Colorado. Decided March 17, 1958. Action for damages to equipment resulting from alleged negligence. Judgment for defendant. Affirmed. 1. NEGLIGENCE — Accident — Presumption. The mere happening of an accident does not raise a presumption of negligence. […]