Portable Rock Crusher For Gold Prospecting

06 september 2015 08:05 pm.Hi everyone i am hoping to get a bit of a feel wether this would be worth marketing or not i cant take full credit for the design as i kinda got a piece from here and a piece from there and i have made a small change and added another small outlet tube so water can be used to minimize dust particles but over all i put it together with the plans in my head, it.