thinking of making a 3 head stamp battery ( rock crusher ) just getting steel together at the moment and maybe a reinforced old trailer as i want it to be portable with a water feed for the dust it will be only a primary crusher to get big stones like a foot size chunks of quartz down to say finger nail size then thinking of 2 roller mills to crush it even finer to dust. then run it threw a sluice or blue bowl recovery circuit if i can fit it all onto the trailer just idea's id like to make soon. will keep you updated on progress. gotta find a trailer first then go from there.