We take a look at the results of the new Aggregate Gradation & Gravity samples, as well as what's in the works for the Proficiency Sample Program.

Related information: 

• AASHTO Accreditation Policy on PSP Participation (http://aashtoresource.org/docs/default-source/publicdocuments/aap-rules-for-psp-participation.pdf)
• Sample Round Analysis (http://aashtoresource.org/psp/sample-round-analysis)
• Sample Types and Tests (http://aashtoresource.org/psp/samples-types-and-tests)
• Datasheets and Instructions (http://aashtoresource.org/psp/datasheets-and-instructions)
• AASHTO re:source on Twitter (https://twitter.com/aashtoresource/status/1562775257928318976)
• Extra Proficiency Samples (http://aashtoresource.org/psp/xps)

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Related information on this and other episodes can be found at aashtoresource.org.