An enclosure for transporting semiconductor wafers includes a pair of sensors that are responsive to electrostatic fields mounted on conductive grounded plates in facing orientations on opposite sides of a position within the enclosure at which a semiconductor wafer is to be located. By conjoining the ironing board and the fan underneath the board proper, steam from an iron can be sucked out through the ventilation holes while the clothes being ironed is stationary by the suction power of the fan to facilitate the action thereof and that the user can be safe guarded from steam, rendering the ironing process fast and easy. Each array of contacts includes multiple contacts formed as part of a generic lead frame. The coil is preferably maintained substantially fixed in position with respect to a sampling aperture for sampling photons or ions from the plasma. Due to such a constitution, the image retention which is generated on a display screen of the liquid crystal display device can be reduced. More particularly, the method combines a catalyst component containing slurry and a catalyst component containing solution to form the completed catalyst composition for introduction into the polymerization reactor.