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In page Carmel Hanna:

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After living and working abroad (which gave her a long-term interest in third world development), she returned to Northern Ireland to work as a staff nurse in the Casualty department at the Mater Hospital, Crumlin Road, at the height of the Troubles. Her experiences there made an indelible impression and strengthened her belief that political change must be made by peaceful means. She was active in the Northern Ireland Civil Rights Campaign of the early 1970s.[citation needed]