the end of 1965, plans were made to raise the power to 1,000 kW, then 20,000, and then 80,000, at which point some electricity would be delivered to the grid. By this time the project which had reached $100 million (), and $120 million by October. The power ramp-ups continued successfully and the day of commercial export was set for 6 August 1966, with the reactor aiming to produce 33 MW of electricity during a run of 60 hours. During the extended run, several of the fuel assemblies showed anomalously high temperatures. There was no clear reason for this, but it was addressed by re-arranging some of the fuel assemblies in the core. Another run-up to the same power level was cleared to start at 8 AM 5 October, but a very minor problems delayed it until 2:20 PM. At 3 PM the power reached 20,000 kW of heat, and erratic behaviour was noted that was addressed with a short period of manual control before returning to automatic. At 3:05, the operator, Mike Weber, noticed that the control rods appeared to be too far out of the core given the amount of heat being generated; normally they should have been about out, but the automatic system had withdrawn them to . Additionally, the reactivity meters were displaying erratic values. This suggested the core had hot spots, but the display of the individual element temperatures was a distance from the main controls. As he scanned the display it was immediately clear that two assemblies were much hotter than the rest. At 3:09, the radiation alarms sounded and a Class I (minor) emergency was declared, sealing the reactor building. At 3:20, the decision was made to SCRAM the reactor. McCarthy arrived shortly thereafter and began planning how to discover what had happened. Weber was concerned there had been local melting, which could cause issues even in a shut-down state. If the melted fuel collected it could continue heating the fuel around it to melting even with the control rods inserted. Although the monitors showed issues only in assemblies M-140 and M-098, only every fourth assembly had a meter, so it was possible there was more widespread melting. By the end of the afternoon the radioactivity was dropping and this possibility appeared remote. Accident investigation A month after the accident occurred some information was finally available by testing the flow rates of the