YOU MUST HAVE ALL OF THE NEEDED ITEMS BEFORE USING THIS CODE.
Go to where you started in the level:1800's Goldmine, and go done the ladder. When you get to teh bottom of the ladder you should see a worm pop out of the ground. If you didn't you took the wrong ladder. You will then see a railroad car beside the worm. Use the railroad. When you get off the railroad car, go back to where you started the level again. Use the same railroad car again. Then walk around there until you get to a row of acid pools. When you get across the acid pools look around there and you will find Tommy. You may need to go up a few ladders.