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The researches about turf and clay in the Rio Ribeira de Iguape valley, realized around 1973-74, are published now, due the great interest in turf, in the moment, as a new source of energy. It is described many occurrence and performed innumerable boreholes in a lea. area of 6.640.000 m² which showed a store of 20.904.000 m³ concerning moist turf and 3.600.000 m³ concerning clay, almost totality profitable to pottery industry.

Estudo preliminar sobre as ocorrências de turfa no vale do Ribeira de Iguape, SP