%0 Journal Article %T Lightly ramified number fields with Galois group $S.M_{12}.A$ %A David P. Roberts %J Mathematics %D 2014 %I arXiv %X We specialize various three-point covers to find number fields with Galois group $M_{12}$, $M_{12}.2$, $2.M_{12}$, or $2.M_{12}.2$ and light ramification in various senses. One of our $2.M_{12}.2$ fields has the unusual property that it is ramified only at the single prime $11$. %U http://arxiv.org/abs/1404.0429v1