Tag: Bernd Hagenah

Ana Maria Ruiz Jimenez joins HNTB’s national tunnel and underground team as principal engineer

HNTB’s growing tunnel team is working on many of the nation’s most complex and innovative tunnel projects NEW YORK– Ana Maria Ruiz Jimenez, Ph.D., joined...

Invisible Enemy

Micro-Dust Gets More Attention as Underground Rail Traffic Grows By Dr. Bernd Hagenah No matter the location, underground rail systems are all burdened by an invasive,...

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