SIP­PING THE FOG

Popular Mechanics (South Africa) - - Letters -

In re­sponse to your cor­re­spon­dent Grant Van­der­wa­gen (“Mist op­por­tu­ni­ties”, Let­ters, July), re­gard­ing the har­vest­ing of water from fog, great idea. Based on my own ex­pe­ri­ence, I can en­dorse the prin­ci­ple. The arid west coasts of the world could well be­come sig­nif­i­cant water-har­vest­ing “farms” of the fu­ture.

For 20 years, we en­joyed a beach cot­tage at Elands Bay. Some morn­ings our deck, un­der a roof, ap­peared to have been hit by an ap­pre­cia­ble rain-shower overnight. Geoffrey Jenk­ins wrote of cairns of rocks, erected in coastal-desert rock-basins, pro­duc­ing peren­nial water, both used by the peo­ples of pre-his­tory and the lo­cal wildlife.

A warn­ing: cor­ro­sion will be one of your great­est en­e­mies. Again from per­sonal ex­pe­ri­ence, it was found that any metal, short of sur­gi­cal stain­less, will be at­tacked. Good luck… maybe we can en­joy a whisky and fog, one sun­down. KEITH HONEYMAN BY EMAIL

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