For those of you dealing with mineralized ground i am happy to tell you of my resent test using my musketeer what i did was get buckets of gravle and used a magnet to take all the magnetic sand and rocks out 1/4" and less now i set up a 3" deep earea in wich my compadre pooped out at 2" in this stuff but the musketeer went right thru it like it was not thear i was totaly suprized no detector i have owned has ever been able to do this minelabe lives up to what they clame in my opinion they are the best if you are dealing whith badd ground this detector will amaze you its as good as a pulse and its vlf