- We can't follow them in there. Set the ray gun at constant heat. We'll melt the cliff and bury them alive.
- Right.

7 seconds sound clip from Radar Men from the Moon - Mass Execution (S1E10).

You can hear this line at 00:09:16.953 in the Blu-ray version of the movie.

Quote context

[...]

- Now I will demonstrate one of ours.

- We decided we would need a ray gun if we were to attack the city.

- So the next day, Ted and I went back and turned nitrous oxide into their ventilating system. When Retik and his guard became unconscious, Ted waited while I went in and got a ray gun. But before we could...

- They're still after us. Let's go.

- That looks like a cave, let's get in there.

- We can't follow them in there. Set the ray gun at constant heat. We'll melt the cliff and bury them alive.

- Right.

- What's that?

- They've turned the ray gun to the side of the cave and there's no way to run. Let's get back as far as we can. Never mind the gun!

- Maybe we can get out along that side.

- But what about that tank?

- We may be able to take care of it.

- Let's try this way.

- I hated to lose that ray gun, but it would only have been good for a few shots without another charge of lunarium.

[...]