Notice about the vault is a Text Log slate which has a mass of 0 and is worth 0.
This
slate contains the following message:
Now that we got a nice little stockpile. I’m putting Jaxon in charge of the vault. He’s the only one who puts anything in or takes anything out. Anyone who tries to go past Jaxon gets a slug between the eyes.
Spread the word. Best if nobody goes near the vault, in case intentions get mistaken.