RAMGARH, KHAGRACHHARI: Upazila Nirbahi Officer Mamata Afrin inaugurates fire fighting exercise exhibition as chief guest at Vijaybhaskarya Chatwar of the upazila in the district on Sunday marking the International Disaster Mitigation Day showing the technique of dealing with fire accidents in gas cylinders. Upazila Project Implementation Officer Md. Nazrul Islam and others were present on the occasion.