The March 2011 ISM Manufacturing Survey was released April 1st. PMI dropped slightly to 61.2%, from a strong 61.4% in February, when the factory index and it's highest level since May 2004. This is the 3rd month for the manufacturing index to be above 60%. Unfortunately, the employment index dropped -1.5 percentage points from last month. which correlates better to the disappointing manufacturing job growth.