Works really well. I ran it for 5 hours the other day without any issues. Got 8 Gold Nuggets per hour. It helped me finish my Prospectors set and now to get the Coal bag.
My only complaint is it seems to favor pointing the camera West. And when its pointed that direction there is a big delay when depositing Pay Dirt into the hopper. Whereas if the camera is pointing North or East, there is no delay when submitting the Pay Dirt. But like I said it favors pointing West and settles in that direction and it slows things down. Another thing is it favors the South box to retrieve the hammer to fix the struts. Which is a longer walk then using the Northern box to get hammer and fixing Northern strut. Especially if you aren't emptying the ore sack at that time and go back to mining pay dirt.
Works really good overall and I'm very happy with it. Main issue is camera angle causing 10 second delay before depositing pay dirt. Wish there was an option to fix the camera in one position so it can't rotate.