I had just dug up a specie last week that went 85 g with 4.5 grams of gold in it and one of the other guys came over for a look. the interference started coming through so I did an autotune to let him in closer and was just re doing the ground balance procedure when a definite signal came through. how it came through with the coil doing that speed is beyond me but after I completed the balance I went back to where the signal came from and out came a very small steel sliver off a dozer blade. that area had produced a specimen that went 20 oz with about 4 oz of gold from 16" in enhanced with the 5000. the smaller specie and the steel were within 10 feet of the original find and I have no doubt I had covered the area numerous times with the 5000 trying to find the big boys father.