And the humming turbines deep in Hoover Dam didn't produce current.

6 seconds sound clip from the The Day the Earth Stood Still (1954) classic radio play.

You can hear this line at 00:36:05 in the radio play.

Quote context

[...]

- Bicycles moved, before awe and the common desolation made the riders stop of their own free will.

- Electric clocks stopped on the dot of noon.

- All across the powered world, the machines stood still.

- Toasters failed to pop and battle fleets on maneuvers drifted aimlessly on their dead propellers.

- Joe Smith's milkshake didn't spin.

- And the humming turbines deep in Hoover Dam didn't produce current.

- Mrs. Housewife's washer stopped in the middle of its cycle.

- And electric lights went out all over the world.

- At a conference table in Washington, a hasty council of the armed services was held.

- As far as we can tell, gentlemen, all electric power has been cut off, all over, with few exceptions. And even these exceptions are remarkable: hospitals, planes in flight, that sort of thing.

[...]