I am looking for examples of how companies at ground zero 
communicated with their employees (voicemails, emails, phonecalls from
CEO, Head of Human Resources, etc.) on September 11th and in the
following weeks.   I'm also looking for examples of how companies and
employees responded (chefs who stayed at headquarters for days cooking
for employees who stayed) how Verizon turned its customer service
people into hotlines for victim's familes.    In addition, any
articles on Internal Communication (communicating with employees) and
September 11th would be great.

Hi,
Thanks for using Google. You've asked such a touchy question that it
again refreshed my memories of that tragic incident.
Just after this incident, everyone in US came forward to offer any
sort of help they can in terms of food, blood, money or any physical
help to the WTC victims. I searched for the info you are looking for
and found many sites related to this.

Heroism can come in the form of someone serving coffee.
http://www.guardian.co.uk/wtccrash/story/0,1300,593043,00.html

Check this link to find out about Verizon and other telecom companies.
http://www.cnn.com/2001/TECH/industry/09/12/telecom.operational.idg/index.html

Check this one too about how FedEx worked in this crisis.
http://www.informationweek.com/story/IWK20011130S0004

Here are some of links which can give you some touchy stories about
the different ways people tried to  put their heart and soul in
helping everyone at Ground zero.
[ http://www.navigant.com/travelNews/NewsFLYR/V3Issue1/SharingHope.asp
]
[ http://www.familiesandwork.org/announce/EmployerResponses_4.html ]
[ http://www.yourdon.com/articles/WTC.html ]
[pdf] - [ www.nycafp.org/pdf/npd01b.pdf ]
[ http://www.fesmag.com/html/feac1101d.htm ]

How Verizon and AT&T put their helping hand:
http://www.informationweek.com/story/IWK20011025S0017

A 30 day report has been prepared and presented by United Way of
America after Sept 11 about how it helped, its responses and actions
taken by the community.
[pdf] http://national.unitedway.org/files/pdf/news/30_day_report.pdf

St. Paul-based Cherokee State Bank also gave their employees the
option of going home on Sept. 11.
http://www.thebaileygroup.com/press_release.asp

Here is an article about the events on Sept 11 and how it changed
America.
[ http://www.greatdreams.com/trade.htm ]

Allstate Gets Everyone Back To Work After Sept. 11:
http://www.informationweek.com/story/IWK20011018S0085

This might be some more help to you.
[ http://www.firehouse.com/terrorist/resources.html ]

How students, dentists and companies helped the nation during the
national tragedy:
[ http://www.ada.org/prof/pubs/daily/0111/1120rel.html ]

Search terms used:
verizon services on Sept 11 and after
://www.google.com/search?q=verizon+services+on+Sept+11+and+after&btnG=Google+Search&hl=en&lr=&ie=UTF8&oe=UTF8

companies at ground zero communication to employees on Sept 11 and
after
://www.google.com/search?hl=en&lr=&ie=UTF8&oe=UTF8&q=companies+at+ground+zero+communication+to+employees+on+Sept+11+and+after&spell=1

I hope this is what you were looking for. Feel free to ask for any
clarification.

Regards,
netcrazy-ga

There is a tremendous piece of reporting by the New York Times that
just came out this week. It discusses many of the points you are
inquiring about:

http://www.nytimes.com/2002/05/26/nyregion/26WTC.html

“Collected by reporters for The New York Times, these last words give
human form to an all but invisible strand of this stark, public
catastrophe”  The article also discusses the efforts of others outside
of the towers.

Chilling stuff.
Tom

http://www.law.com/cgi-bin/gx.cgi/AppLogic+FTContentServer?pagename=law/View&c=Article&cid=ZZZ7UHW36TC&live=true&cst=1&pc=0&pa=0&s=News&ExpIgnore=true&showsummary=0

Chilling article from the American Lawyer magazine titled 91 Emails
from Ground Zero, relates one law firm's experience with an employee
on the ground, just outside the WTC, using his Blackberry to send
emails back and forth all day long.  Reads like a mystery, in that you
don't know what happens to all employees till the very end.