Methods and apparatus are provided for virtualizing resources such as host bus adapters connected to a storage area network. The apparatus, capable of being positioned horizontally or vertically in the coal pipes between the grinding mills and the furnace burner, contains a plurality of adjustable blades that are movable between an open and closed position. The buyer has the convenience of paying through a variety of different payment instruments. An inflatable balloon includes an inflated outer diameter to inner waist diameter ratio of 12.