query = "SELECT   id FROM  contract WHERE gr & (1<<?) != 0 ";
   ps  = con.prepareStatement( query );
   ps.setInt( 1, LOADED_GROUP );
   rs = ps.executeQuery();
 
   int count = 0;
   while ( rs.next() )
   {
      int cid = rs.getInt( 1 );
      cr.deleteContract( cid );
      count ++;            
   }
   ps.close();
   //
   print( "Removed " + count + " contracts.." );