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- Part 1 is carried by One-Eyed Ike
- Part 2 is carried by Doc Phosphate
- Part 3 is carried by the Giddyup Kid
Once all combinations are obtained, a new note spawns in the Sole Survivor's inventory, the Dry Rock Gulch safe combination. With this, the safe at the Dry Rock Gulch Theater holding Mad Mulligan's Mine key can be opened.
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