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HISTORICAL ARCHAEOLOGY <[log in to unmask]>
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Tue, 20 Jan 2009 14:31:12 -0500
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HISTORICAL ARCHAEOLOGY <[log in to unmask]>
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Re: re-use of carbon battery rods
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Marty Pickands <[log in to unmask]>
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Alasdair- are you sure they aren't arc-lamp carbons? Those are pointed, except when they were operated by DC current, one will have a concave tip.  They were used in places where very bright illumination was required, such as factories and outdoors.



Marty Pickands
New York State Museum

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