Sound Byte from National Public Radio USA by Peter Kenyon Link to NPR site:  http://www.npr.org/templates/story/story.php?storyId=124012949 An American in Yemen has become one of the few global manufacturers of affordable and deceptively simple ceramic water filters that could play a vital role in bringing safe drinking water to millions of people. Using technology that originated in [...]

Here is the English checklist of equipment for ceramic water filter factories. 355K Adode Acrobat (pdf)