Do marine LAV's have mine sweepers on them?

Mine sweepers are ships that are designed to clear sea mines from the water

I'm not sure, but I think you could be talking about the game minesweeper that comes as a standard game with windows programs.The numbers that pop up mean that the box with that number is touching...

So they do not explode!

Because Nathan is so awesome the world just explodes.

you can not mine in oreburgh mine but when you get to eterna city you can get the explorer kit and mine then. but still you need ALOT of patience because sometimes itfeels like they never show up....