*idea* copy writes buy Enishi
There is a fence around the mining spot when you use a bomb the fence closes. You can only use 1 bomb at a time so you cant do half then bomb. You can also add people to come inside your fence and once all your rocks have gone or has been over a time limit <( which would give you plenty time to get all rocks by yourself with breaks) then the fence opens. And more mining spots like this around graal.
*idea* copy writes buy Enishi
Enishi