938 resultados para Copper River and Northwestern Railway.
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Mode of access: Internet.
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Mode of access: Internet.
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Signed: Robert G. Simmons, chairman, Thomas F. Gallagher, member, Joseph L. Miller, member.
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Includes bibliographical references.
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Mode of access: Internet.
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Includes index.
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Mode of access: Internet.
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"September 1988."
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"December 1989."
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In the spring of 1953 a program of field reconnaissance for radioactivity in south-central Montana and northwestern Wyoming was authorized by the U.S. Atomic Energy Commission. Field procedures consisted of testing outcrops along roads, in cliffs, and around rim rocks, and testing mines, prospects and the dumps thereof with the appropriate instruments in an attempt to locate exposures of areas showing anomalous radioactivity and to ascertain the geological conditions under which such radioactivity occurred.
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"July 1954."
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"May 1955."
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Spine title: Stretton's railways.
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Mode of access: Internet.
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At head of title: U. S. Department of Health, Education, and Welfare.