Thomas Doane's improved carriage for rock drilling machines used at Hoosac Tunnel

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Thomas Doane's improved carriage for rock drilling machines used at Hoosac Tunnel

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Title:	Thomas Doane's improved carriage for rock drilling machines used at Hoosac Tunnel
Author:	Doane, Thomas.
URI:	http://hdl.handle.net/2452/48675
Date:	1867

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Hoosac Tunnel Photographs [112]

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