The hidden edge

Addison, Graeme
July 2001
African Business;Jul/Aug2001, Issue 267, p18
Describes several South African inventions, as shown during the Celebrate South Africa festival in London, England. Machine which combines low dosage X-rays and digital scanning; Wondafix putty; Stay Awake Stay Alive sleep detector safety device; Ganyesa silk; Q-Drum and Hippowater Roller; Bird flapper; Boulder buster; Play-pump.


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