This photo is pretty much representative of what I found. One blank looks like another.
The site is completely cleaned out. I came across it through some notes I wrote for a mineral locality book. A magazine article written in 1942 wrote of a person retrieving the copper material for the war effort.
Right after the works closed down, I imagine circa 1859, there must have been lots of material lying around. Through the years they were gleaned. The people living in the area apparently did not know what was there or weren't interested. When I was writing the mineral locality book I wasn't interested in metal detecting.
When I went to the site there wasn't anything on the surface. There were so many cinders around that a metal detector was useless.
I was sitting on the bank thinking what to do, idly scratching the ground, when I came up with a little triangular piece of copper. At that point I knew I had it.
I came back with a screen and shovel. After sifting out the material I raked everything back so it looked practically undisturbed. Rains that followed would complete the job.
I later went to another part of the site and found a Chinese coin sitting right on top of some cinders. The site had at the time furnace(s) to produce the copper. This site is now cleaned out. The last time I went there was a no trespassing sign. I had written to the land owners asking if they wanted to strike a deal. No response.
With all these caveats my book is titled "Massachusetts Mineral and Fossil Localities". It is available on line at www.bostonmineralclub.org in the members section of the site. Membership fee is nominal. One does not have to attend meetings to access the site.