piedmont said:
I know of several old mill foundations/works (1750-1900 era) in my area but have yet to detect any of them.
What manner of treasure have you all found in these type of sites??
Any strategies you are willing to share??
Not sure what you mean by "mill"
Here in northern Michigan, "mill" means sawmill.
If this is what you're referring to then lots of iron and few if any coins is the game. I've hunted the mill sites for over 40 years and the number of coins I found at these sites I could count on the fingers of one hand.
Lumberjacks were almost paranoid with their hard-earned pay. Most received credit and were only given cash when they left the site. This was to discourage gambling and all that always follows gambling.
The dates you mentioned should make for great finds in relics. Even if you're hunting a grain mill, any site dating to the 18th century is going to have old buttons, tools, horse hardware, axe heads, crosscut saw blades, and other cool stuff.
I have 3 wonderful dug Spanish buttons dating from 1800 to 1830.
Old sites always mean cool finds!
I'd dig everything. Great items are often masked by larger iron trash and/or relics.
Badger