Hi Larry,
    As I know, those carbon objetcs was used here 1910-1950 for telephon
comunications, normally two and the same time, inside a couple of
"batteries", in a wooden box under the phone. In places without electricity.
Daniel


----- Original Message ----- 
From: "McKee, Larry (Nashville,TN-US)" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, May 22, 2007 12:39 PM
Subject: Carbon electrode rods - ID sources


> Work on early 20th century sites commonly produces molded or extruded
> carbon rods of various sizes, generally identified as cores from
> zinc/carbon cells or batteries. Our recent excavation at a relatively
> isolated farmstead in Missouri produced one single oversized example out
> of a deposit datable to the first decade of the 20th century. The piece
> is 5.75 in long, cylindrical with flattened ridges along its length, 1
> in. in diameter, and with a hole at one end filled with corroded whitish
> material and what might be the remnants of a copper wire.
>
>
>
> We haven't been able to track down much about specifics on these carbon
> rods, in terms of manufacturing dates and specific uses for different
> sizes and configurations. Any suggestions for such sources or references
> to archaeological studies with more information on these artifacts will
> be greatly appreciated.
>
>
>
> Larry McKee, Ph.D., RPA
>
> Program Manager and Senior Archaeologist
>
>
> TRC
>
> 1865 Air Lane Dr., Suite 9
>
> Nashville, TN, 37210
>
>
>
> 615.884.4430  phone
> 615.884.4431  fax
> 615.594.4675  cell
> [log in to unmask] <mailto:[log in to unmask]>
>
> www.trcsolutions.com <http://www.trcsolutions.com>
>
>
>
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