At last Sensex slips 57points and Nifty 13 Points on first week of August Month Trading. After opening 17 points higher at 10,940, the Sensex rallied past the 11,000-mark to touch a high of 11,039 on buying in metal, pharma and technology stocks. The index, however, could not hold gains as weakness in banking stocks soon spread to other counters. The index plunged to a low of 10,810 - down 229 points from the day's high. Fresh buying towards the close saw the index finally close with a drop of 57 points at 10,867. The BSE Bankex, FMCG and Oil & Gas indices were down over 1.5% each to 4773, 1857 and 4999, respectively.