Joab was born in Ngxaza, Tsolo, Eastern Cape in 1920.
His mother was Martha Mzizi and his father was Shadrach Mzamane who was an Anglican voluntary preacher.
[1] Joab worked for most of his career around the Eastern Cape and contributed to the plantation of numerous forests in the Transkei area.
He is most noted for the study of a "New approach to veld management."
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