Minerals from Zaïre, 1983
Deposits
of cassiterite, the chief source of tin, are found in a broad zone extending
from northern Shaba Region through Sud-Kivu and Nord-Kivu to Haut-Zaïre Region.
Associated with the cassiterite are commercially exploitable amounts of ores of
tungsten, niobium, and tantalum. The Kivu Mining and Industrial Company
(Société Minière et Industrielle du Kivu--Sominki) has responsibility for tin
mining in Nord-Kivu and Sud-Kivu regions, and the Zaire Tin Company (Compagnie
Zaïrétain--Zaïrétain) carries out open-pit operations in Shaba Region.
First Day Covers (FDC) with block 51:
Design:
Editor:
Note: Blanco or airmail envelopes are not shown here but do exist.
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FDC Block 54 imperforated
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FDC Block 54 imperforated: Not known to exist.