Peter Parker, the Spectacular Spider-Man #124 (1987)
“When Strikes the Octopus!!”
Writer: Roger McKenzie
Artist: Greg Larocque
Doctor Octopus steals some equipment and builds a nuclear reactor under the city. Spider-Man finds him and fights him. Their fight damages some machinery and almost causes a meltdown, but Ock manages to save the day. Then the ceiling collapses on him just as Spider-Man dives out of the lair.