BOIL­ING POINT

Popular Mechanics (South Africa) - - Letters - MYNHARDT BOSHOFF BY EMAIL

Re­gard­ing Hans Jou­bert’s sug­ges­tion of us­ing a flat dome on top of cool­ing tow­ers to re­cy­cle wa­ter (Let­ters, April), I am no en­gi­neer, but you are now build­ing a huge kettle – which de­feats the ob­ject of a cool­ing tower.

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