Show THE MANGANESE PROBLEM had the fortunes of war placed brazil on the side of the central powers the steel industry in the united states would have faced a serious peril says the iron age with all other sources of manganese ore cut off since the war started brazil has been the indu mainstay except for the very small supply furnished by our own and a few nearby foreign mines for several months the count rys supply of ferromanganese has not exceeded an amount necessary to run the steel industry more than three months and there seems no prospect of overcoming this handicap the united states bureau of mines has undertaken a most important practical research with the object of determining to what extent the use of other manganese bearing materials and the conserving of manganese in certain stages of steel making processes may be resorted to concentration of our iron ores of which the supply is large is one phase the use of substitutes utes and of alloys containing less than 80 per cent manganese as well as the judicious employment of high manganese pig irons are measures giving some promise the production of certain manganese iron alloys in the electric furnace and the electric reduction of high manganese sla flags gs are also lines full of possibilities in passing it may be noted that a vessel from india recently arrived at an atlantic coast port with 2000 tons of manganese ore |