The retired US Mint Director of Design and Engraving had an instrumental level of technical oversight during his tenure. 

For over 35 years, Harrigal applied his technical expertise to innovations involving the structural integrity of coins, which ultimately led to him serving as the US Mint Director of Design and Engraving from 2015 until his retirement in 2021. 

Among his contributions, Harrigal worked on modern edge lettering, which is currently used on Sacagawea and American Innovation Dollars; planchet specifications for many coin programs, including the American Gold Buffalo and American Palladium Eagle coins; and alloy, dimensions and die specifications for large format coins. He provided design specifications for dies to create the first US-produced concave coins and managed the redesign of the American Silver and Gold Eagle coins in 2021. 

Additionally, Harrigal oversaw the first laser frosting application on a US Mint product and the implementation of the privy marks found on 2021 Morgan Dollars.

He started as a Senior Advisor in 2013 and Quality Manager in 2015. From 2012-2014, he helped management with proposed coin legislation, design processes, and coin futures/options. Ron moved to Philadelphia in 2015 after being selected as the Director of Design and Engraving. Here, he managed the layout, sculpting, and engraving processes. He cut legacy processes and improved the time to market for new products. 

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