by Jim_Alaska » Sat Feb 09, 2019 11:25 pm
chiseling is nonsense. The chunks contain gold that would have to be crushed to get it out of the hard pack. If it is really cemented material like we get here on the Klamath, the only way to go is with a high pressure washer. It will take the cemented material apart grain by grain, freeing the gold in the process. I use one here when it is needed and it will cut through the cemented hard pack nicely. One man can do it by simply laying the nozzle ahead of the direction you are blasting.
If it is simply normal hard pack a blaster line is all you need.