Booklets -- Before and After, Extraordinary Reclamation Projects by Vulcan Materials Company, [undated]

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  Sand and gravel industry; Reclamation projects

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  The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.

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  Booklets -- The History of the Los Angeles Aggregate Industry: A Century in Review a publication of Vulcan Materials, CalMat Division, (1998)

  Manuscripts

  The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.

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  Douglas W. Sprague papers

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  The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.

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  Correspondence -- Miscellaneous, (1980-2008)

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  The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.

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  Annual reports - Reports

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  The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.

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  Masters theses - Proceedings

  Manuscripts

  The first series consists of material related to Douglas W. Sprague's tenure as a member and executive officer of the California State Mining and Geology Board from 1976 through 1985.

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