What is with the weird noise in Willy Wonka and the Chocolate Factory?!
Question:
What is with the weird noise in Willy Wonka and the Chocolate Factory?
you know the one when grandpa joe says "full blast"
Answers:
The factory hasn't been operating ever since Wonka locked it up when he suspected Slugworth of sending in spies. The sound you hear is the factory going back into action.