Hong Kong-listed Zijin Mining Corp. has signed a memorandum of understanding with the government of the Republic of Tuva to develop the Kyzyl-Tashtygskoe lead and zinc mine, according to an announcement made by Tuva's head Sholban Kara-ool after a visit to China. Tuva's official delegation to China consisited of the Prime-Miiniste, Chairman of the Representative Chamber of the Great Khural Khonuk-ool Mongush and head of the exterior links agency Yelena Kara-sal. Zijing company acqainted guests from Tuva with an enrichment plant in Shangan similar to the one which is to be put into exploitation by January, 2008. The one in Todzha will produce up to 1 mln tonns of the copper concentrate.The Chinese corpoation will invest $ 206 bln all in all.