"nugget baby" joke

In a South American mining district Mrs. Brown presented her
husband with a 12 pound baby boy. Mr. Brown was so delighted
that he went to the News office and told that he had found a
12 pound nugget of gold as good as any to be found in South
America. The paper, naturally, sent a reporter to get
particulars. This is what happened:
Reporter: Does Mr. Brown live here?
Mrs. Brown: He does.
Reporter: Is he in?
Mrs. Brown: No he isn't.
Reporter: I understand he found a nugget of gold weighing 12 pounds.
Mrs. Brown: (Seeing the joke) Yes.
Reporter: Can you show me the exact location where it was found?
Mrs. Brown: I'm afraid Mr. Brown would object as it is private.
Reporter: Is the hole far from here?
Mrs. Brown: No, it is quite handy.
Reporter: Has Mr. Brown been working the claim long?
Mrs. Brown: Almost ten months.
Reporter: Was Mr. Brown the first to work it?
Mrs. Brown: He thought he was.
Reporter: Was the work difficult?
Mrs. Brown: It was at first but easier after the shaft opened.
Reporter: Is the water plentiful?
Mrs. Brown: Yes, sufficient to carry on the work.
Reporter: Has he gotten to the bottom yet?
Mrs. Brown: No, but quite near it.
Reporter: Do you think there are any more nuggets?
Mrs. Brown: Yes, if the claim is properly worked.
Reporter: Has he worked it since he found the nugget?
Mrs. Brown: No, but I told him it was time to start.
Reporter: Do you help him?
Mrs. Brown: I do my level best.
Reporter: Do you think he will sell the claim?
Mrs. Brown: No, he finds too much pleasure in working it himself.
Reporter: Can I see the nugget?
Mrs. Brown: Certainly.
She brought the baby in for inspection. The embarrassed
reporter departed very quickly.