John was one of the most active members ever of our Society - chairman of the Commission on Testing Methods during 19 years, Vice President, President and Fellow. He was one of the most influential teachers of rock mechanics and author and editor of several of the most relevant books on the discipline.
We will keep warm memories from him for his paramount professional contributions, but also for the permanent friendship and kindness. The ISRM will prepare tributes to John Hudson during the coming months.
Our thoughts are with his wife Carol and his close family, to whom we present our deepest condolences.
Secretary General, ISRM.