The consultation to the certain document for the researcher, without loss of time, can guarantee fast decisions and until more efficient a strategical positioning. Thus, the archivist can contribute very for the work of the historian, when she selects and she tries to keep measured of conservation preventive so that the durability of information if does not lose. We are task of all, therefore, to preserve the document in any support, so that in the future the new generations will count on more information easily had access and can contribute with the history of a people who has memory. The irony of as much technological evolution is that, to the times, the progress walks pra brings, when, although as many innovations and discoveries we do not obtain to preserve the documentos14antigos. According to Kenneth Feinberg, who has experience with these questions. For the film ‘ ‘ fire lento’ ‘ it can be observed the alarming cases of degradation of the paper and the information. The intellectual registers lose with passing of the times for intempries physicist-ambient and human beings. Thus, the paper passes of the acid state for the alkaline one with great easiness and becomes fragile, desfragmentando itself and loses it completely information. It is a piece of the history that apodrece and disappears.
Therefore, they are important urgent measures in the whole world to preserve our memory, either of the form as if it can at the moment preserve. In film ‘ ‘ fire lento’ ‘ the only technology of preservation of that they made use was the preservation microfilming, today, counts on techniques of digitalizao and another one that recoup the document, although to know itself that ninety percent of books and papers is manufactured in acid substance and goes to grow worse itself in little time if the measures certain of preservation will be taken.