Abstract: A process for selectively reducing calcine from a copper/nickel containing sulfidic material includes subjecting the calcine to a mildly reducing atmosphere at relative high temperatures. CuO is selectively converted to Cu2O which can easily be separated by leaching from other metals which may be present in the material.

Abstract: An automatic utility meter is provided for collecting, calculating, storing and displaying data correlative of consumption of utility commodities such as electric power, gas, water and the like. In addition, the automatic utility meter includes communication means which allows bi-directional communication of data to and from a remote computer. The automatic utility meter is a direct replacement for existing electric utility meters and uses direct read circuitry to sample and calculate power directly from the input voltage and current waveforms received from an electric utility company.

Abstract: An information display system uses data comprising graphical images of pages of a publication and text data. The images comprise images of both text and non-text matter, where the text matter includes a plurality of predefined passages of text, and the text data comprises the plurality of predefined passages of text. A display is provided to simultaneously display at least a part of a page of the image and a selected predefined passage of text. A user operable selector is provided to enable a user to select a portion of the page of the image displayed by the display whereby the display simultaneously displays the selected predefined passage of text as well as the page of the image.