Complex sentence: In 1993 he joined the Department of Corrective Services, Sydney, where he made an important contribution in the counseling of Aboriginal prisoners with drug and alcohol problems in New South Wales Prisons and published a set of booklets on overcoming violence and alcohol abuse.
Split into simpler sentences: In 1993 he joined the Department of Corrective Services, Sydney, where he made an important contribution in the counseling of Aboriginal prisoners with drug and alcohol problems in New South Wales Prisons. He also published a set of booklets on overcoming violence and alcohol abuse.