ANNE MIMAULT THE president of Burkina Faso's mines chamber said extra measures would be taken to increase security and help to avoid further suspensions after Russia's Nordgold shut down a gold mine in the insurgent-hit country earlier this month. Nordgold called force majeure on its Taparko mine on April 9, citing the deteriorating security situation in the West African nation where Islamist militants have gained ground and escalated attacks in recent years. Taparko's closure prompted a meeting on April 14 between the head of the army and the mines chamber. "Measures will be taken and strengthened on all aspects... to…