New to growing your own tomatoes? This is the forum to learn the successful techniques used by seasoned tomato growers. Questions are welcome, too.
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March 8, 2009 | #10 | |
Tomatovillian™
Join Date: Dec 2008
Location: Pleasure Island, NC 8a
Posts: 1,162
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Quote:
I found this to be interesting - "Page 12 GAO-05-251 Anthrax Detection Mail processing facilities use several types of high-speed machines to process letters. At the facility that initially receives a letter for mailing, an advanced facer-canceller system cancels the postage stamp. For identification and sorting, other machines with optical character readers apply bar codes and markings (that is, identification tags) to the envelopes. The tags identify the time and date of processing, the machine and facility that processed the envelope, and the delivery destination. During fall 2001, USPS used this information to track the path of contaminated envelopes through the mail system. Delivery bar code sorter (DBCS) machines sort the mail. One machine alone processes about 37,000 letters an hour, using pinch belts that repeatedly squeeze the letters. During processing, paper dust accumulates, particularly near pinch rollers that move the mail through the machine. Since the rollers and optical readers are hard to access with vacuum nozzles, compressed air was typically used to blow debris out of the machine. The compressed air was, however, banned in October 2001 because of concern about the potential for spreading anthrax in mail processing facilities." www.gao.gov/new.items/d05251.pdf |
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