Chain of Custody--Recommendations
for Acceptance and Analysis
of Evidentiary Geochemical Samples

By Christine Murphy, Paul Briggs, Betty Adrian, Steve Wilson,
Phil Hageman, and Pete Theodorakos

U.S. GEOLOGICAL SURVEY CIRCULAR 1138

Mineral Resource Survey Program Committee report
detailing the guidelines for acceptance and handling
of evidentiary geochemical samples

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1997

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For more information about this report contact: Christine Murphy at cmurphy@usgs.gov

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