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Circulars

• Chain of Custody -- Recommendations for Acceptance and Analysis of Evidentiary Geochemical Samples
  U.S. Geological Survey Circular 1138
• Aggregates from Natural and Recycled Sources: Economic Assessments for Construction Applications - A Materials Flow Analysis
  U.S. Geological Survey Circular 1176
• The Human Factor in Mining Reclamation
  U.S. Geological Survey Circular 1191
• Planning for the Conservation and Development of Infrastructure Resources in Urban Areas -- Colorado Front Range Urban Corridor
  U.S. Geological Survey Circular 1219
• Geologic Studies of Mercury by the U.S. Geological Survey
  U.S. Geological Survey Circular 1248
• Earth Science Studies in Support of Public Policy Development and Land Stewardship—Headwaters Province, Idaho and Montana
  U.S. Geological Survey Circular 1305
• An Introduction to Using Surface Geophysics to Characterize Sand and Gravel Deposits
  U.S. Geological Survey Circular 1310
• From Projectile Points to Microprocessors - The Influence of Some Industrial Minerals
  U.S. Geological Survey Circular 1314
• Regional Fluid Flow and Basin Modeling in Northern Alaska
  U.S. Geological Survey Circular 1319
• Geological, Geochemical, and Geophysical Studies by the U.S. Geological Survey in Big Bend National Park, Texas
  U.S. Geological Survey Circular 1327
• Understanding Contaminants Associated with Mineral Deposits
  U.S. Geological Survey Circular 1328
• Thorium Deposits of the United States—Energy Resources for the Future?
  U.S. Geological Survey Circular 1336

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