Lamination in Central African pieces

[Justin]

This knife I posted a month or so ago ;
http://www.vikingsword.com/vb/showthread.php?t=1472
shows forging flaws that looks a lot like it was made of steel rods that were laminated together.The knife over all seems to be African in origin which leads me to my question,did the Central or South Africans use laminated blades and if so what types of lamination did they use?

I know they didnt make patterned damascus, but I didnt think they made blades of anything but 'mono steel'/iron.

thanks in advance for any help.