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<p>[QUOTE=&quot;springfld.arsenal, post: 342192, member: 54&quot;]Good observations so far!&nbsp; One aspect-the large number of threaded holes on the “entrance” side-must mean there was some machine to which this thing was fastened, and very securely so.&nbsp; Some of the posts above were getting at this.[/QUOTE]</p><p><br /></p>

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