Mini's militant political activities began in 1951 when he joined the
African National Congress. In 1952 he was jailed with
Govan Mbeki and
Raymond Mhlaba for three months in
Rooi Hel ('Red Hell' or North End Prison, Port Elizabeth) for participation in the 'Campaign of Defiance against Unjust Laws' (Defiance Campaign). He intentionally entered railway property reserved for Whites only, and because of his imprisonment, lost his job as a packer in a battery factory. On his release he married his trade union work with political activism, rose rapidly in the ranks of the ANC and was elected secretary of the ANC Cape region. In 1956 Mini was one of 156 defendants in the famous
Treason Trial. The state's case collapsed for lack of evidence and Mini was discharged on 20 April 1959. In 1960 he became secretary of the Eastern Cape branch of SACTU, a target of repression. He was arrested and detained along with Govan Mbeki, Temba Mqota, Raymond Mhlaba, J Makgatho, F Matomela, Alvin Bennie, Frances Baard, Norman Ntshinga, V Bisset, S Ndzube, Father
Mark Nye, H Stanton, Dr Colin Lang, John Brink, Chief Albert Luthuli, Peter Tsele, Titus Maimela, Samuel Maimela, Peter Brown, Dr
Hans Meidner, Dr G M Naicker, M P Naicker [Durban editor of New Age],
Helen Joseph, and many others under the
State of Emergency declared under the Public Safety Act on 30 March 1960. In 1961, Mini was one of the first group of people to be recruited into uMkhonto we Sizwe (MK), and become a member of the Eastern Cape High Command. Mini was arrested on 10 May 1963 together with two other prominent ANC members,
Wilson Khayinga and
Zinakile Mkaba. They were charged with 17 counts of sabotage and other political crimes including complicity in the January 1963 death of
Sipho Mange, an alleged police informer. == Death sentence ==