An F.B.I. agent finds herself tracking terrorists planning a man-made earthquake.

The crew in the command center was still alert and coherent, although some of them appeared shaken by the man-made earthquakes they'd experienced in the last five minutes.

It was created after a massive man-made earthquake.

An F.B.I. agent finds herself on the trail of terrorists planning a man-made earthquake in California.

In fact, the avenue trembled as if from a man-made earthquake transmitted down the el pillars, and the furtive man shuddered in his turn.

A Navy lieutenant (Crash Corrigan again) investigates man-made earthquakes that threaten the world ("Undersea Kingdom," 12 episodes).

Was it possible that he might tip off the whole secret behind the destructive man-made earthquakes?