The New York Times

THE OVERWORKED ASSAY OFFICE; New York's Government Plant Handles Lion's Share of Precious Metals. THE CITY'S GOLD MARKET Workmen In Old Wall Street Landmark Convert Precious ...

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Daily Camera

Assay Office Museum will hold an open house Saturday

Boulder County Parks and Open Space representatives invite residents to an Assay Office Museum open house from 11 a.m. to 3 p.m. Saturday to learn about the history of assaying precious metals in the ...
KTVB

From gold to dust: historic Boise Assay Office unearths mining era artifacts

BOISE, Idaho — An assay office is a facility where the quality and purity of precious metals, such as gold, silver, and platinum, are tested and certified. The process, called assaying, involves ...