Chap. XXVIII.] m.vnufactuke of fereo-manganese. 
587 
silica in both the ore and fuel would be 0-98 ton for each ton of ferro- 
raanganese made. Hence the total charge would be in the following 
proportions for every ton of 79% ferro made : — 
Manganese-ore . . . . . . TQ tons 
Coke . . . . . . . . 2 5 
Limestone . . . . . . , . 10 
Now the average price for first grade ore from 1901 to the beginning 
of 1908 has been 11-13 pence per unit of manganese. Let us take 
11 pence. The c.i.f. value of 52% ore at United Kingdom ports would 
therefore be Rs. 35-12 per ton on the average; allowing Rs. 13-4 
(see table 50) as the cost cf sending this ere from Bombay to England, 
the/. 0. h. or export value at Bombay would be Rs. 22-8 per ton. Let 
us assume, for the sake of a concrete example, that it is proposed to 
make the ferro-manganese at Sini, Bengal- Nagpur Railway. As this 
place happens to be about the same distance (521 miles) from Kamthi 
as Bombay is (529 miles), Kamthi ore delivered at Sini would have to 
be paid for at the export value at Bombay, namely Rs. 22-8 per ton. 
The coke would probably not cost more than Rs. 16 per ton i in 
wagons at Sini. The cost of the limestone I do not know ; but it 
would probably not be more than Rs. 5 delivered at Sini, especially if 
the Bisra limestone should prove suitable. Hence the cost of the 
materials necessary for the production of one ton of ferro-manganese 
is as follows : — 
Rs. a. 
r9 tons of manganpse-ore ..... 42 12 
2'o tens cf cokp . . . . . . 40 0 
I'O tons of limestone. ..... 50 
87 12 
Now the average market price of ferro-manganese at Pittsburg 
during 1901 to 1907 as quoted in the Engineering and Mining Journal 
is $61-37 or Rs. 191-12. It would probably cost Rs. 18 to 20 to 
send the ferro-manganese from Sini to the European and American 
markets. Assuming the latter figure, the average value of the ferro 
at the works at Sini would be Rs. 171-12. The difference between 
this and R.'-. 87-12, the cost of the materials, is Rs. 84. From this 
has to be deducted the costs of smelting the charge for the production 
of the ferro and all the other charges, such as depreciation on plant 
1 The figure given me by Mr. H. Macleod, for IP07, when prices were high. 
ITI M 2 
