Abstract: A method for operating a blast furnace includes feeding metallic charge materials, alloy elements and energy carriers in the upper part of the furnace shaft. An oxidizing agent is fed in the lower part of the shaft. Filler material, namely, alloy elements, metal chips, carbon, sands, dust are fed individually or in combination into the melting zone in at least one burst jet. Fuels may be introduced additionally into the first jet. The oxygen is fed at a high speed into the melting zone in at least one separate jet and the conditions of introducing the materials in the first jet and the oxygen in the second jet are controlled so that no flame can be formed.

Abstract: A remote control movable ball amusement device includes a plurality of shell parts so as to result in a non-spherical ball. Preferably each shell part is driven independently of the other. An antenna is provided which extends externally of the shell parts to increase the range of operability of the device.

Abstract: A knock down kiosk is in the form of a trapezoid having a back wall and diverging side walls all of equal length. The trapezoid is open at its front to permit users to enter the kiosk. A floor, a lower front panel, a countertop and a roof are detachably mounted to the walls. The various components may be stored in a compact condition.