priestly life, classes, talks, conferences, meetings, visits to work centers, attention to people in his office at the School, trips to the ministries and official entities, trips abroad, and his inveterate dedication to training through numerous readings. He did not fully recover, and in February 1967 he suffered a cardiac embolism, for which he underwent surgery in Madrid where an artificial prosthesis was placed in his heart. After several years of normal life, in January 1973 he was hospitalized for heart problems in Bilbao, where they imposed a strict recovery regimen, and after it he came back weak to Mondragon. As he did not improve because it was an irreversible disease, in February 1974 he had to go back to the hospital to undergo another surgery, given that the previously placed artificial valve became denatured over time and needed to be replaced. The complex operation ended well, but the following days Arizmendiarrieta suffered as the wounds that became infected did not heal, it was the so-called "sickness of the operating room". In April he was discharged to return to Mondragon, where his wounds were treated daily. Only his priestly asceticism explains the silence with which he experienced the physical suffering that accompanied him after this last operation. Cures and medications, especially antibiotics, constituted a painful martyrdom that he led with resignation, while, still weak, he tried to lead a normal life. After several hospitalizations and discharges, at the beginning of November 1976 he was admitted to the Mondragon Health Center, where the doctors decided not to make him suffer any more with new cures for his wounds, until the day of his death on November 29. His body was exposed in the parish for two days, passing thousands of people to pay homage to him. On December 1, the funeral was held, presided over by the Minister of Labor and officiated by 60 priests. Cooperative enterprises: 1955-1976 Until 1955 Arizmendiarrieta developed his work in four different areas, and in all cases with inter-class cooperation criteria: - Parish church, which included the Catholic Action Center and the Spiritual Exercises Work, - Social, with social health assistance works through anti-tuberculosis and children's clinics, or housing construction through the Mondragon Home Association, - Formative, represented by the Professional School, and - Recreational, oriented towards sport and cinema with the Sports Youth. The business area was pending, with the participation of workers in the