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• Small Powerboat On Potomac River Above Mt. Vernon Churns Up Silt, April 1973

  • Uploaded by: U.S. National Archives
  • License: No known copyright restrictions
  • 0 comments
  • 0 favorites
  • 17,729 views
  • Date taken: 1973-04
  • Date uploaded: 2012-06-28
  • Tags: nara:arcid=547674, johnneubauer, usnationalarchives, environmentalprotectionagency, documerica, potomac, river, silt
  • Visibility: public
• Silt-Laden Waters of Saddle Bunch Keys. Silt Occurs Naturally in the Formation of Coral Reefs, But Excessive Amounts Are the Result of Dredging by Developers.

  • Uploaded by: U.S. National Archives
  • License: No known copyright restrictions
  • 0 comments
  • 4 favorites
  • 10,080 views
  • Date taken: 1975
  • Date uploaded: 2010-06-23
  • Tags: usnationalarchives, environmentalprotectionagency, documerica, nara:arcid=548703, florida, saddlebunchkeys, silt, keys, coral, reef, coralreef, dredge
  • Visibility: public