Atlas Obscura brings us a story about book sorting at New York Public Library. This machine explains why, if you put a hold on a book at NYPL, when it’s ready you’ll get an email saying “In the next 24 hours your book will be available at your branch library”. They must be sending the email at the same time as they send the book off to the Lyngsoe Systems Compact Cross Belt Sorter in Queens. The machine is made in Denmark and can be seen in operation in this ABC news report.

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