Ma and Pa Kettle Back on the Farm (1951)

Tom Kettle, his wife Kim, and their new baby are living happily with his parents in their new home until Kim's uppity parents arrive from Boston to visit. They proceed to take over the rearing of the baby and the whole Kettle household, and Ma and Pa Kettle decide to move back to their ramshackle farmhouse. There they discover uranium on their property--or think they did.