This week, the Webster Parish 911 call center has been inundated with more than 300 calls from panicked residents. The underground bunker explosion at Camp Minden Monday had Minden residents on edge, wondering what the cause of the blast was.  Several of the callers confused the loud explosion with someone trying to break into their home. According to sources, extra 911 call center dispatchers had to be called into work to handle the demand of the high call volume. The blast occurred at an underground bunker operated by Explo Systems Inc. on land leased by Camp Minden. While Explo Inc. is responsible for the housing of the munitions, the cause of the blast is still unknown.