Mr Suhm joined the company in 1986 as a development engineer and became a member of the Board of Management when Herrenknecht GmbH became a stock corporation in 1998.

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According to Herrenknecht, it was under Mr Suhm’s leadership that the Herrenknecht Business Unit Tunnelling, which includes tunnel boring machines (TBMs) for supply and disposal tunnels with diameters of up to 4.2 metres, shaft sinking equipment, vertical drilling rigs and pipeline installation technology, grew to become a global leading supplier.