From: ILPI Support <support**At_Symbol_Here**>
Subject: [DCHAS-L] Handy tip for finding web resources that have disappeared
Date: Wed, 27 Jul 2016 21:02:42 -0400
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 9FAC3527-995D-4D34-A05E-1BF3DEFAC532**At_Symbol_Here**

I thought some of the list members might benefit from this handy tip.  I was editing our SDS Hyperglossary entry on alkali metals, and one of the links included under Further Reading referred to a document from LLNL that had been taken off their site years ago. I was linking to a copy someone else had posted and that link recently died, too. The document is nowhere to be found on the web.

The easy solution here was to utilize the Internet Archive Wayback Machine at  This non-profit library takes snapshots of web sites at various points in time so you can see what a page looked like say, in 2003.  All I did was navigate to 2003 version of our web page, clicked a link to the LLNL document, and then moved forward in time to the document's last update before it disappeared.  So now I can link directly to a page which no longer exists.  Cool and very handy.

Speaking of web resources, we made a couple updates to the SDS HyperGlossary recently.  Here are the newest entries with more to come sporadically in the near future:

Aspiration Hazard:

Hazard Not Otherwise Classified (HNOC):

Product Identifier:

Signal Words:

We also have updated our collection of Official OSHA interpretations of the HazCom Standard so it now includes all of those that have been released to date (427 of them).  They are segregated by version of the HCS they were written under: and, of course, are heavily hyperlinked:

For a number of the ones that were written as the transition from HCS 1994 to HCS 2012 was on the horizon, we've added annotations to provide to provide context under both systems as well as our best guess as to the current validity.  We will eventually start working backwards through the collection of older ones to update them similarly, but that will be a long time coming, of course.  Some examples:

If anyone has specific older interpretations they'd like to see similarly annotated with respect to HCS 2012 and/or validity, just let me know and we can prioritize those.

Enjoy all,

Rob Toreki

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