N&W Hooter whistle
NW Mailing List
nw-mailing-list at nwhs.org
Mon Dec 13 22:34:03 EST 2010
So what is the difference when higher pressure steam is applied? Is there a
change in tone or just volume?
From: nw-mailing-list-bounces at nwhs.org
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Sent: Monday, December 13, 2010 6:51 PM
To: nw-mailing-list at nwhs.org
Subject: FW: N&W Hooter whistle
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