Sterlite Industries (India) Limited - Sterlite Industries India Ltd.

Fabrication Facility
The fabrication facility at Korba has two parts, a cast house and a sheet rolling shop.
Cast House
The cast house uses continuous rod casters from Continuus-Properzi S.p.A. and has a foundry which has twin-roll continuous casters with a
SNIF degasser and hydraulically driven semi-continuous ingot casting machine to produce ingots and wire rods.
Sheet Rolling Shop
The sheet rolling shop has three parts: a hot rolling mill with a capacity of 75,000 tpa, an older cold rolling mill with a capacity of 30,000
tpa and a newer cold rolling mill commissioned in 2004 with a capacity of 36,000 tpa. Molten metal is cast into slabs and then either hot-rolled
and sold as hot-rolled sheets or converted into cold-rolled sheets in the cold rolling mills. Alternatively, molten metal is directly used in strip
casting and then fed to the cold rolling mills to convert it into cold-rolled sheets or coils.
Captive Power Plants
Smelting requires a substantial continuous supply of power and interruptions can cause molten metal to solidify and damage or destroy the
pots. Power for the Korba facility is for the most part provided by the older coal-based 270 MW captive power plant commissioned in 1988
together with a newer coal-based 540 MW captive power plant commissioned in March 2006. Thermal coal is a key raw material required for
the operation of BALCO’s captive power plants. In April 2008, BALCO entered into two five-year coal supply agreements with SECL for the
supply of thermal coal by SECL to BALCO, which represents approximately 66% of its thermal coal requirements, with the remainder
obtained through open market purchases and imports of coal.
Production Volumes
The following table sets out BALCO’s total production from its Korba facility for the three years ended March 31, 2009:
Year Ended March 31,
Facility Product 2007 2008 2009
(tons)
Korba Alumina (1) 222,395 217,185 197,947
Ingots 182,921 195,795 172,263
Rods 72,981 101,183 127,120
Rolled products 57,287 61,693 57,399
Total (2) 313,189 358,671 356,782
Notes:
(1) Reflects alumina production. Alumina that is produced is used in production of aluminum and rolled products. Additional alumina
needed for production of aluminum is purchased from third parties and not reflected in alumina production numbers. Approximately
two tons of alumina is required for the production of one ton of aluminum.
(2) Reflects total of ingots, rods and rolled products.
The following table sets out the total bauxite ore production for each of BALCO’s mines for the three years ended March 31, 2009:
Year Ended March 31,
Mine (Type of Mine) Product 2007 2008 2009
(tons, except for percentages)
Mainpat (Open-pit) Bauxite ore mined 665,495 628,925 571,422
Ore grade 45.6% 45.2% 44.7%
Bodai-Daldali (Open-pit) Bauxite ore mined 331,950 520,109 300,250
Ore grade 50.0% 49.5% 49.1%
Total 997,445 1,149,034 871,672
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