Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Andrew Slifka and Elizabeth Drexler of MML Awarded 2017 DoC Silver Medal

Slifka, Drexler

Slifka, Drexler

Andrew Slifka and Elizabeth Drexler were recognized for providing the ASME hydrogen pipeline code committee the scientific basis for revising its design and construction codes, reducing the material and labor required for new hydrogen pipelines while maintaining safe operation. The work showed that higher-strength steels could be used in hydrogen with no reduction in fatigue performance. These new guidelines enable reductions in material cost between 30-45%, with associated labor cost reductions. The result is that the cost of new hydrogen pipelines has decreased by between $500,000 and $1 million per mile.

Created March 21, 2018, Updated November 25, 2019