Colombia, Peru and Canada
October 2017 saw Han Admiraal travelling to Medellin, Colombia to give a keynote lecture during the ACTOS XII Andes Tunnelling and Underground Works Conference on 5 October 2017. A week later, he joined Antonia Cornaro for a keynote in Montreal, Canada, on 12 and 13 October 2017 as part of a workshop organised by the Tunnelling Association of Canada.