Hi Again Royal 1,
I was just checking back and noticed your comment about a dozer having unearthed some "COINS". Coins require smelting, minting, packaging and storage assuming that the coins were made with the gold from the mine. Big assumption! If the coins were Spanish then that time frame goes back quite far and possibly the minting would have been done closer to the mine but maybe not. If the coins were modern (1800's) american coins then that is a different thing entirely, maybe. A lot of holes to fill in here.
Google Earth has some good maps online including satellite images. With the satellite images one can sit in their easy chair and look at the ground around the area of your interest. IF one can see the ground one can possibly make out trails, old building sites, disturbed areas, tailing piles and possibly if they exist one may notice some odd trees (trees that are not like others [palm trees where there are pines and oaks]or were planted in a row or two trees standing directly across from one another to mark an entry way) that may indicate possible human activity. These unique patterns would define places more likely to search than just searching the entire freaking countryside. Any abnormal looking stack of rocks or "feature" or possibly an old bottle laying out in the sun light 'twinkling'. Being out there at the general site one should pay attention for 'Old Tree Cuts' as truly OLD cuts turn black, at least they do here in NorCal in the mountains. You are looking for a 'needle in a haystack' and you need to narrow down the search area somehow and looking at and thinking about what you are looking at in a different way than you've possibly ever thought about 'things' before will help.
Seems to me that to have mine one needs to have a mine camp. It is nice to have water to drink and if that were close to the camp site all the better. One needs to discard of their trash somewhere and if they were orderly folks then there would be a central dump. Taking a dump would also have been needed so somewhere there would have been an established biffy IF they were orderly folks. What does a mine camp look like? Depends on the country. If its flat then the site is flat but it will have some bits of trash scattered here and there - not beer cans or pull tabs think pieces of boots, old leather, hob nails, old glass most likely broken bits of it, shards of a wool blanket (they did not have plastic back then), coat buttons. If the country is hilly then camp is likely to be on the side of a hill so the hill will have small dug outs around it. Each dug out will have been a miners bed site, it will be as long as the miner was tall and they were short back then and I guarantee you there will be trash there and possibly a dump will be off to one side of the camp. These are things you can search for via satellite or look for walking around BUT have a plan to your search. Mark your search pattern with sticks and maybe colorful plastic marking tape (see contractors supplies at home depot they have this tape, get it in red as it can be seen easier than most other colors or if your search are has bright red then get a different color). This is a time to think and just let your mind run wild with possibilities as some of the wildest possibilities thought of now will come back to you during a computer session or while walking the ground.
As an example and on another thread here on Tnet I talked about hiking/exploring(okay wandering aimlessly) through the forest while going up hill, now that's directional. At a sort of large flatish area there were A LOT of OLD Champagne bottles scattered everywhere and broken. Boy somebody really got drunk. At the time I did not think of what this meant. These guys were used to rough coffee, maybe some crude beer or a whiskey back in town, this quantity of Champagne bottles was out in the mining area and they had one heck of a party. Why? They struck it RICH! I am ashamed to tell you that this thought did not occur to me till just a few days ago. Let's see I was there in about 1974. We, me included, need to pay attention to what our eyes are seeing and then to think about what we have seen with a curious mind. Just like a 2 year old, Why, Why, Why....................................and so on.
Okay time for me to take a nap. Hope you have some fun..........63bkpkr