yes! i am elated with your preliminary findings. i am thinking the 4 at the business end of a 44 might be terrific for hunting "curb strips" that are heavily laden with ferrous junk. worked slowly,may make a difference in getting around the "crap",or one could apply the 4 to a ''concentrated",
"gridded" off park area for maximum effectiveness...if you are getting 6"
or so in the air,in an (e.m.i.) environment,then these are exciting results,and bodes well for possible "in the dirt matrix" performance. take your time monte!..weather "sucks" all over the country now.give yourself some time to "heal" springs not far away. thanks for the effort so far!

(h.h.!)
j.t.