Sept 14 (Reuters) - First Quantum Minerals Ltd FM.TO -
* First Quantum Minerals provides an update on its zambian operations
* First Quantum Minerals - Agreement reached between zesco, government of republic of zambia and first quantum
* First Quantum Minerals - Agrees to tariff increase to about $0.09 per kilowatt hour
* First Quantum Minerals - Tariff increase on conditona that Kansanshi and Sentinel can each import portion of their total power requirements from alternative suppliers