National Archives and Records Service film-vault fire at Suitland, Md. : hearings before a subcommittee of the Committee on Government Operations, House of Representatives, Ninety-sixth Congress, first session, June 19 and 21, 1979 (1979)

Record Details:

Title:
National Archives and Records Service film-vault fire at Suitland, Md. : hearings before a subcommittee of the Committee on Government Operations, House of Representatives, Ninety-sixth Congress, first session, June 19 and 21, 1979
Date:
1979
Publisher:
Washington : U.S. Govt. Print. Off.
Volume:
National Archives and Records Service film-vault fire at Suitland, Md. : hearings before a subcommittee of the Committee on Government Operations, House of Representatives, Ninety-sixth Congress, first session, June 19 and 21, 1979
Leaf #:
000197
Language:
English
Subjects:
Washington National Records Center. Building A, Motion picture film collections
Collection:
Books and Government & Law
Format:
Books
Contributor:
Prelinger Library
Sponsor:
Internet Archive
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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185 with proper storage conditions, deterioration is slow. When nitrate film is in good condition, the flash point is between 300 and 356° F The conversion of nitrate film is complicated. Often the first safety copy we make may be the only known copy. Therefore it should not be used as a viewing copy. Instead it serves to generate a duplicate negative from which a viewing copy can be made. Meanwhile the nitrate material must be held until the first safety copy has been carefully inspected for quality. Work with nitrate is highly specialized. Film shrinks over the years, and our laboratory has had to develop equipment to accommodate various kinds and degrees of distortion. A few small commercial laboratories still handle nitrate, and are available for supplementary work when the problems are routine, but their quality is not always uniform, and the use of such laboratories involves shipping problems. The National Archives Laboratory has also at times assisted us, in the cooperative spirit that has marked our relations in such matters. But in general we must continue to be, as we have been in the past decade, largely dependent increasingly dependent on our own Library of Congress laboratory. Until 1978 this laboratory was in the Library of Congress Building. Our plans call for reestablishing this laboratory at Wright-Patterson Air Force Base. Its location close to our principal nitrate vaults will eliminate much of the nitrate transport that has been necessary during past years. The safety copies will be sent to