“Juice?” queried Bob.
“Yes, nitro-glycerine you know. They carry it in a bottle, drill a hole in the door, pour it in, tamp it with soap, and set it off with a fuse. They must have blown the doors when a train was going past so as to deaden the noise, for no one heard it.”
“Where was the watchman?” asked Jerry.
“The bank didn’t keep one, but I guess they will after this,” replied Mr. Thompson grimly. “They’d have saved money if they had had a man on guard. Here you can see where they started to drill a hole in the door, and changed their minds. Probably it wasn’t in the right place.”
He pointed to a small hole, neatly made in the hard steel.
“Took a pretty good drill for that,” was Jerry’s opinion.
“Yes, it was a power-drill,” said the policeman. “Oh, these were up-to-date crooks all right, and they made a good get-away.”
“How’d they get in?” asked Ned.
“I don’t believe they’ve found out yet. You see this is the first time we’ve had a big robbery like this, and it’s sort of upset the force. It’s a mystery how they got in.”
“The detectives have about solved it though,” put in an officer in uniform.