"The Minelab Excal has a great feature, it will null (loss of threshold sound) when it goes over a piece of iron so you know it is iron, plus it will still tell you there is gold there by the iron..."
I have hit alot of spots peppered by guys with minelabs - I have followed them with Pi and Cz (in all metal)- dug iron they passed by and have gotten many old gold next to and under iron - not just one or 2 rings - im talking probably 20 gold rings at least over the yrs
bottom of page - article I wrote "Trash: the importance of picking it up "
Flickr: Casper-2's Photostream