If the mineshaft gets caved in the whole structure will probably be compromised, making the safehouse uninhabitable purely because it's liable to collapse at any moment. Be careful with our new house. Why don't you and Joseph collab and join together? Once Eli's stopped threatening Abi and Brooks, maybe we can stumble in on you two training in the woods - after all, one of you has super speed and the other one can...uh, control speed? IDK. I don't even know what a vector is, let alone comprehend your power.

It'd save a lot of hassle because then at least we'll know you're both in the Unwanted Squad and you won't end up staring down the barrel of a shotgun trying to make frantic excuses without admitting to the fact you're a superpowered mutant. Learn from our mistakes.