Colombia’s Constitutional Court has struck down strict mining regulations passed last year, but said the regulations will remain in effect for two years to give Congress time to draft and approve a replacement bill. This will affect, among others, London-listed Anglo American, AngloGold Ashanti, BHP Billiton, Greystar, Rio Tinto and Xstrata.
See http://www.minesandcommunities.org/article.php?a=10923.