congo says mining law not to be retroactive

Might also help BSE. Different african country, but shows the theme to the changes.

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DR Congo says mining law overhaul not to be retroactive

http://af.reuters.com/article/investingNews/idAFJOE8A002320121101

BUKAVU, Democratic Republic of Congo (Reuters) - Democratic Republic of Congo's planned overhaul of mining laws, to give the state higher royalties and a bigger stake in projects, will not affect existing contracts, its mines minister said. ...