UPDATE 3-Few answers and 28 still missing three days after Brazil dams burst
November 08, 2015 at 19:32 PM EST
MARIANA, Brazil, Nov 8 (Reuters) - Three days after a massive mudflow and flood caused by ruptured dams at an iron ore mine, Brazilian authorities are still struggling to determine a cause or even recover the bodies of as many as 28 people possibly swept away in the torrent.
