Acacia Mining said it was seeking an adjudicator to resolve its dispute with the Tanzanian government, a day after the east-African country passed two laws to force companies to re-negotiate their contracts.
British water giant Biwater cannot use an investment treaty to make Tanzania pay millions for an abrogated water privatization contract, an international tribunal ruled in July.
Tanzania was glad to secure the services of a British-led consortium to run the newly privatised water system in its capital Dar es Salaam. But then the price of water started to rise