Red Rock Resources, the gold mining company, says November sales from its Colombia project were ahead of the previous month.By 30 November preliminary sales figures from the El Limon mine were 520.8 ounces compared to the October figure of 509 ounces. November was still behind September, however, when Red Rock sold 527 ounces.Red Rock also warns that December sales will be reduced by religious holidays and scheduled maintenance work.Shares in Red Rock have fallen 77% in the last 12 months.BS