If half that geologists have said of Brazil is true, this country is destined to become one of the greatest mining regions of the Americas; it has an extraordinary variety of minerals, but their location in the interior where little transportation exists, added to the restraining influences of archaic mining laws, has checked enterprise. Before the European War began plans were well under way for development of important iron mines in Minas Geraes by an English company, but work is in abeyance at present. There has been, however, a marked increase in exports of high-grade manganese, chiefly from Minas, chiefly shipped away in the newly operating line of freight steamers owned by the United States Steel Corporation, which bring manufactured products to Brazil. Out of the total of more than three hundred thousand tons of this ore exported from Brazil in 1915, over two hundred and sixty-six thousand tons were sent to the United States, the price paid being over two and a half million dollars; Great Britain also took ten thousand tons, but Germany and Belgium, former customers for this ore, were eliminated from the lists. During 1916 production, mainly from Minas deposits, rose to over five hundred thousand tons, again increasing to five hundred and thirty-three thousand tons in 1917; after this time depression was experienced, due in great measure to lessened demands from the United States using home-produced low-grade ores for steel hardening. Post-war prospects of development of the great Itabira iron deposits suggest iron and steel industries within Brazil. Large manganese deposits also occur in the neighbourhood of Nazareth, on the mainland side of the Bahia de Todos os Santos (Bahia State), situated conveniently for shipment; its export was reduced to practically nothing from this point during 1914 and 1915, probably for the same reason that shipments of another famous Brazilian mineral, monazite sand, vanished about the same time from Bahian lists. This reason was the imposition of strangulating export taxes, amounting to about twenty-two per cent of the value of the mineral. Manganese deposits are known to exist, in addition to the beds in Bahia and Minas, in Matto Grosso, Santa Catharina, Paraná and Amazonas; the total quantity available is estimated at one hundred million tons.