As soon as miners hit a gold vein, unscrupulous entrepreneurs, some-times financed by illegal paramilit-ary groups, show up with excavators to churn the soil and divert rivers before using toxic mercury to separate the gold from the alluvia
Half-rings remember decisions, abandonings, the rich alluvia
yoke the river -- so restless and forgetful -- to the past.
Called Surepure, the technology is being tested by a many South African wine estates including Steenberg, Alluvia
Stellar Organics, Clarius, Bouchard Finlayson and L'Ormarins, as well as winemakers in California, Chile, New Zealand and Australia.