The alloy ferromanganese is also used in the production of special manganese steels.
"The Economic Aspect of Geology"
C. K. Leith
The higher-grade ores, ranging from 35 to 55 per cent in manganese, are used mainly in the production of the high-grade alloy called ferromanganese or ferro, in which the manganese constitutes 65 to 80 per cent of the total.
"The Economic Aspect of Geology"
C. K. Leith
The United States and England agreed as to supplying Canada with ferromanganese.
"The Economic Aspect of Geology"
C. K. Leith