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Re: [Shop-talk] plumping question and sandrock sewers

To: "Randall" <tr3driver@ca.rr.com>
Subject: Re: [Shop-talk] plumping question and sandrock sewers
From: pethier@comcast.net
Date: Tue, 30 Oct 2007 22:40:01 +0000
From: "Randall" <tr3driver@ca.rr.com>
> BTW, the USGS has updated their estimate of MSL several times in the past
> century, with changes in some inland areas varying by a meter or more.  To
> really quote .01 foot accuracy, you need to specify *which* USGS map you are
> referring to.  As I understand it, it's not even done by the USGS any more,
> but was transferred to the new National Imagery and Mapping Agency a few
> years ago. 

Dunno.   The number hasn't changed here recently.  If you are building locally, 
your best bet is to shoot to our benchmarks.  We know our sewers haven't gone 
anywhere.    :-)



--
Phil Ethier  West Side  Saint Paul Minnesota  USA
1962 Triumph TR4 CT2846L, 1992 Saturn SL2, 1993 Suburban,
1994 Miata C package
pethier [at] comcast [dot] net    http://forum.mnautox.com/forums/
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I decry the textmessagization of the American-English language.
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