At the moment there is only one graphic once a mine is found,the problem is he does two things-100% bigger mine and 50% chance of faster mine...So as it stands you have no idea what the mine is capable of as they always bring back bigger mines so you don't know if its a slow or 100% faster..We need to know in advance of placing a mine if it has that capability..I suggest a second graphic( added to image) that show's if it has found its 50% chance of faster mine.
prnt.sc/mpaxjg slow
prnt.sc/mpaxo1 fast
People can't and won't place Ind mines on them till they know what it is.