Uhh, not too long after getting heavily involved in the hobby (1996) and detecting with a used White's Eagle Spectrum.
I had just found an 1854 Seated Liberty quarter in a park across the street from the Crip's or the Blood's
headquarters at that time here in Portland, OR. (don't remember which and I was new to the 'hood)
So, I was so intensely listening to my machine and not paying attention (never a good idea) while working slowly around a very large old tree.
What happened is that I bumped my search coil into the tennis shoe of one of the two guys who were working a trade of money for crack cocaine next to said tree.
The one facing me saw me before I bumped the other guy and he understood it was just an accident, but the guy I bumped into nearly had a heart attack and took off running
Oh, and I usually wear baggy camouflage pants and black boots, and black tees.
I am not a large man but I carry myself well in these situations so I just smiled and moved slowly away as they say in the movies.
I can still see that one guy running out to the street and down the sidewalk in a panic. Makes me smile.
But I was sure freaked out about the incident when I had time later to contemplate what could have happened.
nwdetectorist
TOO MUCH DIRT NOT ENUFF TIME!
BTW: I too have walked around for 20 minutes or more wondering why no targets were sounding off. Funny how these machines will not function in the off mode.