At Mineracão Corumbaense Reunida's Corumba Mine.  Left: Upper section of the iron formation capped cliffs that rise up to 1000 m from the flats of the vast Pantanal swamp;   Upper centre: With João Möller, inspecting enriched iron formation on the edge of the extensive, shallow pit;   Right: Weathered, supergene enriched iron formation from the wall of the pit in the image to the left;   Lower centre:  Studying and discussing drill core.
Photographs by Mike Porter.