An account is given of an investigation of a metal-working site at Rehoboth, near Windhoek. Surface evidence of slags, charcoal, ash, and heat affected stones and sand led to excavation from which stone objects identified as tuyeres were recorded. It is concluded that the site dates from about A.D. 1650 and represents the use of a different technique to that employed in South-Central and East Africa. The essential difference is that this site indicates a furnace consisting of a hole in the ground using a stone tuyere, while in the other areas low clay shaft furnaces and clay tuyeres were used. The implications are discussed. -- AATA