ERIKAS MWISI KAMBALE ILLEGAL gold mining is destroying tracts of pristine rainforest in Congo's Okapi Wildlife Reserve, a UNESCO World Heritage site meant to be a haven for the endangered mammal nicknamed Africa's unicorn, environmental organisations warned on Tuesday. Industrial activities are supposed to be banned in the 13,000 square kilometres of the reserve in the northeast Democratic Republic of Congo. Aerial photo evidence shows mining has persisted, the civil society groups said at a joint news conference to mark the international day of the okapi. The Council for Environmental Defense through Legality and Traceability (CODELT) said the ongoing destruction…