Talk:Process duct work

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I just began a long document. thanks I have years of experience & this is a complex subject that will take a while to devolope —Preceding unsigned comment added by Daniel 1949 (talk • contribs) 21:13, 18 March 2009 (UTC)

I am beginning to re-rite based on wickipedia standards, Dan Str Eng (talk) 13:52, 20 February 2010 (UTC) Dan Str Engineer