The ore reserves of central and southern Sweden are estimated at 140 million tons, included in a great number of relatively small deposits. Most of the mines of central Sweden are controlled by small Swedish operators. Some of the mines, however, such as Blotberg, are to a large extent under German control, and the largest one, Grängesberg, is operated by the same firm that controls the deposits of Swedish Lapland. Some of the ores of central Sweden, such as those of Dannemora, Norberg, Strossa, and Stripa, are very low in phosphorus, and are used in the manufacture of special low-phosphorus iron; others, like those of Grängesberg and Blotberg, contain more than 1 per cent. of phosphorus. =Austria-Hungary.=--The iron ores of the former Austro-Hungarian Empire are mainly low-grade hydrous iron silicates that require roasting, large deposits of iron carbonate, and some limonite. The total probable ore reserves have been estimated at 940 million tons, of which about 560 million are very low grade. The principal sources from which the domestic iron ore used in the past in the Austro-Hungarian Empire has been obtained are the chamosite-hematite deposits at Nucitz and elsewhere in Bohemia; the siderite beds at Erzberg, in Styria, estimated to contain more than 200 million tons of ore; the siderite-limonite deposits on the slopes of the Carpathians; and deposits of various ores in northern and central Bosnia. By far the largest of the deposits is that at Erzberg, owned and operated by the Oesterreichische Alpinen Montan Gesellschaft, presumably Austrian. The Bohemian deposits, also important, are largely under the control of the Prager Eisen Industrie Gesellschaft. The Carpathian deposits are largely controlled by local individuals and firms, among them Duke Philipp of Sachsen-Coburg-Gotha-Kohar. Thus the principal deposits have been largely under Austro-Hungarian control. As a result of the war and the disruption of the Austro-Hungarian Empire, the Bohemian deposits, estimated to contain 35,100,000 tons of high-grade ore and 221,800,000 tons of low-grade ore, will come under the control of Czechoslovakia, whereas the Bosnian ores, with an estimated reserve of 21,500,000 tons, will go to Jugoslavia. Austria will retain control of the large Erzberg deposit in Styria, and the ores of the Carpathian region will continue under Hungarian control. =Algeria, Tunisia, and Morocco.=--The iron ores of Morocco, Algeria, and Tunisia, in northern Africa, are mainly high-grade hematite. The reserve tonnage of Algeria and Tunisia is estimated by Nicou at 100 million to 150 million tons, and about 30 million or 40 million tons is reported in the Spanish territory of Riff, Morocco.