[Air-L] Access to tweet archives

Hi, I'm in Athens doing some research and was interviewing some people from RadioBubble (http://international.radiobubble.gr/), a non-profit web radio station which is providing vital coverage of the crisis, the fascist movement, and the antifascist movement. They've kept some archives of a hashtag they use for gathering news, #rbnews, but don't have the complete archives, and want them to use a basis for writing an overview of the crisis. Does anyone know how they could do this for free? Like most people in Greece, radiobubble is hanging on by the skin of their teeth financially. Thanks, sky.