Terry is correct, it is a 10, but much of the large gold was gone before 97. My guess would be before 90, but there was a jump in the finds once the PI's hit the market, which was in the mid 90's.
I remember I had permission to hunt one of the most desirable locations by the name of Potato Patch which is located on top of Rich Hill in AZ. The owners at the time were Jack and Laura Culp gave my dad and me full permission to hunt it any time we were down in AZ.
One trip I took Rod Hamilton to the top with me. Rod was marketing manager for Tesoro at that time. I can still remember him getting so excited as we approached the top and saying he couldn't believe he was really going to the Potato Patch to hunt gold. Well, we hunted alright but didn't find much . That area was private but a lot of people had hunted it anyway without permission and basically stole the the easy to find gold.
Had they taken time to ask, It is almost certain Jack and Laura would have let them go up and hunt.
Laura told us a story about a guy who a few years earlier bragged about going to the Potato Patch and finding pounds of gold. In fact he had several large nuggets and a bunch of smaller ones he was selling at some type of community event they were having in Congress, AZ. Anyway, Laura heard the guy was bragging about hunting the top of Rich Hill and that is where he found his gold. So, Laura approached the guy casually acting like a perspective buyer and began asking questions.
The guy openly admitted finding the gold on her property but said he had permission to hunt the area. By this time there was a crowd listening to the guy talk about his adventures to the top of the mountain. So, when the time was right, Laura asked the guy again about his having permission and the guy again said he did.
Well, Laura then called her husband over and asked him. "Jack this guy says he had permission to hunt the Potato Patch, did you give it to him?" Well, Jack said he had not and he didn't even know the guy. Laura then turned to the guy and told him she was the owner of the property and she didn't give him permission either.
Beet faced and embarrassed, the guy quickly packed up and left.
Laura giggled as she told the story because she mentioned later, had the guy asked prior to that run in, she would have given him permission.
Laura and Jack always had a story. I remember one where Jack took (I think) a D8 cat to the Potato Patch and cut several large swaths for some geologists to make evaluations. During one of he passes, Laura was casually watching her husband work when she noticed a pie plate nugget roll up and tumble in front of the heavy equipment her husband was running. She was stunned by the size of the gold and watched for it again. Well, it surfaced again and she realized what it was, she started yelling at her husband. He couldn't hear her and was looking the other way. By the time she got his attention, some time and distance had passed. Jack went back and tried to push the area carefully again but never did see the nugget again. They mentioned it to the geologist inspecting that area but never heard from him either. They often wondered if the nugget was still there or if the guy found it.
Now, I hunted the top of Rich Hill on several occasions and maybe found a total of an ounce or so in all the trips I made. I offered the gold I found to Jack and Laura but they never seemed to be interested in any of it. She was just happy to hear people we were finding some.
For those of you who have never heard of Rich Hill and the Potato Patch, it is something to look up. During this time, there was a club located on the Weaver side of Rich Hill and a mini gold rush happened there. A few people ran into one gulch called the Cadaver gulch that gave up quite a few nuggets in the oz to 5 oz range. The mini rush lasted several months but then it was over.
Over the 20+ years I hunted across AZ on my vacations, I heard of a few places giving up some nice gold but overall, the big continuous finds were over early in that 20 years. We got in on the tail end of the easy gold found around Meadeview and Gold Basin, but in a few years even that area was tough to hunt.
We were lucky enough to stumble into a location near Model Creek where we took out several oz's but that was a once in a lifetime event. A pic of three of the half oz nuggets found there can be seen sitting on the coil of a SD2200 which I field tested at the time for Lost Treasure. My dad found the largest on that trip, a 1 oz piece of gold.
A friend told me recently he and another friend hunted that same general area recently and managed a gram nugget for their several days of time spent.
So, in my opinion, it is definitely getting tougher to even find a piece of gold, let alone make a living doing it.
Anyway, sorry to bore you with some of my adventures.
One more thing, Jack and Laura finally sold the Potato Patch and shortly after Jack died of Cancer. Their dream was to sell the property and travel a lot but only part of that came true.
Reg