Alright there a glitch that allow you to Mine the Same out non stop. Each ore can take a total of 11 hits b4 it goes blank. Hit it 10 times and walk back one or more steps. This will make the Game think its a refresh. Repeat this Step as many times as you want. Recommended that you use a Magical Hoe (20,000 coins) and go to 7-9 hits then move back (prevents you hitting 11 by accident). Items that you don't pick up on hit will be dropped on floor.