Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.  

CSN POSTS RECORD NET REVENUE OF R$14.5 BILLION IN 2010

São Paulo, Brazil, March 28, 2011

Companhia Siderúrgica Nacional (CSN) (BM&FBOVESPA: CSNA3) (NYSE: SID) announces today its results for the fourth quarter of 2010 (4Q10) and full year 2010, in accordance with Brazilian accounting principles and international financial reporting standards (IFRS), and denominated in Brazilian Reais (R$). All comments presented herein refer to the Company’s consolidated results and comparisons refer to the third quarter of 2010 (3Q10) and full year 2009, respectively, unless otherwise stated. The Real/U.S. Dollar exchange rate on December 31, 2010 was R$1.666.

• Net revenue totaled R$14.5 billion in 2010, 32% up on the previous year and a new record;
• The gross margin reached 47% in 2010, an 11 p.p. improvement over 2009;
• Annual gross profit amounted to R$6.8 billion, 71% up on the year before;
• Adjusted EBITDA came to R$6.4 billion in 2010, an increase of 76% over the previous year.
• The adjusted EBITDA margin stood at 44%, 11 p.p. higher than in 2009;
• Mining revenue reached the record amount of R$3.6 billion, 84% up on 2009;
• Iron ore sales totaled 25.3 million tonnes in 2010, the Company’s highest-ever figure and a 13% improvement over the year before;
• Consolidated steel product sales volume on the domestic market, where margins are historically higher, accounted for 86% of total annual sales volume;
• In 2010, the Company’s consolidated investments totaled R$3.6 billion;
• The net debt/ adjusted EBITDA ratio closed the year at 1.55x, 0.19x less than at the end of 2009;
• CSN is a highly liquid company, with a cash position of R$10.2 billion.

The recovery of the global economy is being led by the emerging countries. The IMF expects global growth of 3% to 4% in 2010, with the developed countries averaging between 1% and 2%, and the emerging nations between 6% and 8%. On the other hand, inflationary pressure in the developed economies remains under control, despite the upturn in food and commodity prices, while inflation indices in the emerging countries are high due to the substantial increase in economic activity and the higher commodity prices.

- USA:

The U.S. economy recovered towards the end of 2010 and the country closed the year with GDP growth of 2.9%, the biggest figure since 2005, mainly due to the government’s fiscal incentives, higher exports and the resumption of private investments.

Nevertheless, unemployment remained high, recording 9.4% in December 2010, equivalent to around 14 million people out of work. A total of 900,000 jobs were created last year.

Several economists expect higher growth in 2011, according to a recent survey by the Wall Street Journal. The main expectations are: GDP growth of 3.5%, inflation remaining flat at 2% with no increase in interest rates and unemployment below 9%.

The auto industry should be one of the main growth drivers – leading manufacturers estimate vehicle sales of more than 13 million units in 2011.

- Europe:

The growth pace in Europe continues to slow, chiefly due to the fiscal squeeze and the discomfort over sovereign debt, especially in Italy, Spain, Greece and Ireland. The high level of debt in these countries has led to uncertainties regarding the solvency of their banking sectors and fears of a possible moratorium. According to CRU, these four nations hold 64% of all loans granted to financial institutions in the Eurozone.

Eurozone unemployment is still running at 10%, or around 15 million people, one of the highest levels in the last 12 years. However, this is expected to improve in the coming months thanks to a possible upturn in exports, especially in Germany, and higher consumer spending.

For the first time in more than two years, inflation exceeded the 2% target stipulated by the European Central Bank, reaching 2.2% in December, with the exceptionally cold weather pushing up food and energy prices. In 2011, commodity and energy prices should continue to exert inflationary pressure, although the ECB maintained the inflationary target at 2%.

According to CRU, the Eurozone should record GDP growth of 1.7% in 2010 and 1.6% in 2011. Germany stands out in the European scenario and has been maintaining the economic leadership in the region, with its GDP expected to grow 2.5% in 2011.

- Asia:

After fueling the recovery from the global financial crisis, China has gone through a monetary squeeze cycle in an attempt to break the growth of inflation, which closed the year at 4.6%.

Throughout 2010, the government adopted measures to contain growth by increasing interest rates and reserve requirements, limiting credit and introducing energy-saving targets. Despite their restrictive nature, however, all these measures are designed to ensure that the Chinese economy grows in a sustainable manner.

China GDP grew by 10.3% in 2010, 2% above the Chinese government’s target, and the country overtook Japan as the world’s second largest economy, with GDP of US$5.9 trillion.

On the exchange front, China has let the yuan appreciate by around 6% against the dollar since June 2010, effectively ending its two-year-long rate-fixing between the two currencies, making the yuan more flexible.

China has an ambitious urbanization project which will absorb substantial investments through 2025, by which time it expects to have 221 cities with at least one million inhabitants each. The Chinese real estate market is exceptionally buoyant, with property prices recording annual double-digit growth.

- Brazil:

Brazil’s economic performance in 2010 put it among the emerging country leaders, thanks to the increased employment rate, higher individual income and the expansion of credit.

The year’s highlight was the creation of jobs in various sectors of the economy – 2.52 million in all, a massive 115% more than in 2009. In December 2010, the IBGE (Brazilian Institute of Geography and Statistics) recorded unemployment of 5.3%, the lowest since the historical series began in 2002. This decline, plus the increase in earnings, helped push up consumption. IBGE figures show that the real wage bill increased by 8.6% year-on-year in December 2010, impacting retail sales which climbed by 10.9% in 2010, the best result for nine years.

However, productive sector investments were unable to keep pace, resulting in increased inflationary pressure. The IPCA consumer price index moved up by 5.91%, 1.41 p.p. above the midpoint of the Central Bank’s target band, mainly pushed by services and food.

The government imposed restrictive monetary measures in an attempt to control the inflationary upturn. The National Monetary Council increased reserve requirements and the minimum credit card payment term, while the COPOM (Monetary Policy Committee) unanimously raised the SELIC base rate by 0.5p.p. to 11.75% p.a.

The total volume of financial system credit reached R$1.7 trillion in 2010, 21% up on 2009, while the credit/GDP ratio moved up to 47% and default fell throughout the year.

The restrictions on consumer financing and more expensive bank borrowing may alter market expectations vis-à-vis a monetary squeeze in 2011, possibly impacting investments and economic growth.

GDP growth totaled 7.5% in 2010, the highest figure since the introduction of the Plano Real in 1994 and the outlook for the coming years is also promising, underlining an exceptional moment for Brazil’s economy. According to the Central Bank’s FOCUS report, GDP growth should average 4.2% in 2011 and 2012.

According to the IBGE, industrial output grew by 10.5% in 2010, another outstanding macroeconomic indicator. The sectors that contributed most to this performance were capital goods and consumer durables, especially vehicles and home appliance, as well as typically exporting sectors, led by commodities.

International capital movements continue to pressure the Real. Despite the government measures throughout the year, the Real appreciated strongly against the dollar. At the beginning of the year, the FOCUS report estimated a year-end exchange rate of around R$1.80; however, the actual rate was R$1.67. In February 2011, foreign reserves reached the record level of US$300 billion.

Macroeconomic Projections

CSN’s consolidated financial statements are presented in accordance with international financial reporting standards (IFRS) issued by the International Accounting Standards Board (IASB), and in accordance with Brazilian accounting practices, issued by the Accounting Pronouncements Committee (CPC) and approved by the Brazilian Securities and Exchange Commission (CVM), pursuant to CVM Instruction 485 of September 1, 2010. These practices are in full convergence with the international rules.

Consolidated net revenue totaled R$14,451 million in 2010, a 32% improvement over the R$10,978 million posted in the previous year and a new Company record.

In the fourth quarter, consolidated net revenue came to R$3,444 million, 13% down on the R$3,949 million recorded in the quarter before and 13% more than the R$3,057 million reported in 4Q09.

In 2010, consolidated COGS amounted to R$7,687 million, 9% up on the R$7,022 million posted in 2009.

In 4Q10, consolidated COGS totaled R$1,929 million, 4% less than the R$2,000 million registered in 3Q10 and 11% more than the R$1,740 million posted in 4Q09.

In 2010, CSN recorded a net expense of R$551 million in the “Other Revenue and Expenses” line, versus revenue of R$721 million in 2009. The R$1,272 million reduction was chiefly due to the positive non-recurring effects of the reverse merger of Big Jump Energy Participações S.A. by Namisa and the adherence of CSN and its subsidiaries to the REFIS tax repayment program in 2009.

In 4Q10, the Company recorded a net expense of R$180 million under “Other Revenue and Expenses”, R$56 million more than in 3Q10, primarily due to the booking of additional provisions for environmental contingencies. In comparison with 4Q09, the net expense increased by R$354 million, due to the positive impact of the REFIS adherence in that quarter.

In 2010, SG&A expenses totaled R$1,215 million, 9% up on 2009, reflecting the stronger sales efforts in 2010.

In 4Q10, SG&A expenses came to R$282 million, 11% down on 3Q10, basically due to reduced steel product sales volume, and 10% less than in 4Q09.

Adjusted EBITDA as presented in this release comprises net income before the financial result, income taxes, depreciation and amortization and other operating revenues (expenses), the latter operating item being excluded due to its non-recurring nature.

Adjusted EBITDA totaled R$6,355 million in 2010, 76% up on the R$3,621 million recorded in 2009, accompanied by an adjusted EBITDA margin of 44%, 11 p.p. more than the 33% adjusted margin reported the year before.

In the fourth quarter, adjusted EBITDA amounted to R$1,442 million, 21% down on the R$1,836 million adjusted EBITDA posted in 3Q10 and 18% more than the R$1,219 million registered in the same period in 2009.

The adjusted EBITDA margin stood at 42% in 4Q10, 4 p.p. down on the 46% adjusted margin in 3Q10 and 2 p.p. up on the 40% recorded in 4Q09.

Differences when comparing adjusted EBITDA and adjusted EBITDA margin previously released in BRGAAP and current figures released in IRFS are presented below (in R$ million):

The 2010 net financial result was negative by R$1,911 million, chiefly due to the following factors:

These negative effects were partially offset by returns on financial investments and other financial revenue (expenses), totaling R$535 million, basically due to the upturn in cash and cash equivalents.

The 4Q10 net financial result was negative by R$538 million, mainly as a result of the following:

These negative effects were partially offset by returns on financial investments and other financial revenue (expenses), totaling R$181 million, also chiefly due to the increase in cash and cash equivalents.

On December 31, 2010, the consolidated net debt stood at R$9.8 billion, R$0.5 billion more than the R$9.3 billion recorded on September 30, 2010. The main factors contributing to the upturn were:

These effects were partially offset by adjusted EBITDA of R$1.4 billion in 4Q10.

The net debt/adjusted EBITDA ratio closed 4Q10 at 1.55x, based on annual adjusted EBITDA of R$6.4 billion, virtually stable when compared to the 1.51x recorded at the end of the previous quarter.

On July 14, 2010, CSN, through its wholly-owned subsidiary CSN Resources S.A., issued bonds worth US$1 billion at 6.5% p.a. and maturing in July 2020, in accordance with U.S. Rule 144A and Regulation S. The issue price was 99.096% and the bonds were guaranteed by CSN.

On September 16, 2010, CSN, through its wholly-owned subsidiary CSN Islands XII Corp., issued bonds worth US$1 billion at 7.0% p.a., in accordance with U.S. Rule 144A and Regulation S. The bonds are guaranteed by CSN and the proceeds were primarily used to settle the US$750 million perpetual bonds issued by CSN Islands X Corp in 2005, with a return of 9.50% p.a.

The chart below shows the maturities of CSN’s loans, financings and debentures on December 31, 2010:

CSN posted 2010 net income of R$2,516 million, 4% down on 2009.

The improved results in the steel and mining segments were offset by the increase in other operating expenses, due to non-recurring gains recorded in 2009 and the upturn in financial expenses in 2010.

Differences when comparing Net Income previously released in BRGAAP and current figures released in IRFS are presented below (in R$ million):

CSN invested R$3,636 million in 2010, R$2,201 million of which in or by subsidiaries and jointly-controlled companies, allocated as follows:

The remaining R$1,435 million went to the parent company, mostly in the following projects:

CSN invested R$1,164 million in 4Q10, R$684 million of which in or by subsidiaries and jointly-controlled companies, allocated as follows:

The remaining R$481 million went to the parent company, mostly in the following projects:

Working capital closed December 2010 at R$2,844 million, R$155 million down on the September 2010 figure, chiefly reflecting the decline in assets due to reductions in “Accounts Receivable” and “Inventories”. The increase in inventories of finished and semi-finished products were offset by the reduction in raw material inventories. The average receivables period fell from 32 days at the end of September 2010, to 26 days at the close of December 2010, while the average supplier payment period narrowed from 30 days to 25 days.

Working capital recorded year-on-year growth of R$770 million in 4Q10, basically due to the increase in inventories as a result of the lower sales volume of steel products. The average receivables period declined from 31 days at the end of 2009 to 26 days at the close of 2010, while the average supplier payment period fell from 26 days to 25 days.

The Company maintains integrated operations in five business segments: steel, mining, logistics, cement and energy. The main assets of each segment are presented below:

The information on CSN’s five business segments is derived from the accounting data, together with allocations and the apportionment of costs among the segments. CSN’s management uses adjusted EBITDA as an indicator to measure recurrent net operating cash flow.

The charts below show the various segments’ contribution to CSN’s overall net revenue and adjusted EBITDA.

The Company’s consolidated results by business segment are presented below:

Scenario

According to the World Steel Association (WSA), global crude steel production totaled 1.4 billion tonnes in 2010, 15% up on 2009 and a new record.

Nevertheless, many steel-producing nations have still not recovered their pre-crisis levels, China and certain other Asian countries being the exception.

In accordance to World Steel Association, the global steel industry capacity utilization rate closed the year at around 74% in 2010, although production capacity and global steel product consumption still remains highly unbalanced. As stated by the WSA, surplus production capacity is currently running at around 500 million tonnes.

This imbalance, allied to the appreciation of the Real and the existence of state government import incentives fueled Brazil's flat steel imports.

Supported by higher raw material prices, especially of coal, scrap and iron ore, international steel prices began to show signs of recovery at the close of 2010, leading some steel plants to consider reactivating their blast furnaces to benefit from the upturn.

According to the Brazilian Steel Institute (IABr), apparent consumption of steel products reached the record level of 26.6 million tonnes in 2010, 43% higher than the previous year, and the Institute expects the figure to increase by a further 6% in 2011, to 28 million tonnes.

Also according to the IABr, annual consolidated production totaled 32.8 million tonnes of crude steel and 15.6 million tonnes of rolled flat steel, 24% and 31% up, respectively, on the previous year.

Consolidated domestic sales of rolled flat steel came to 11.7 million tonnes in 2010, a 30% improvement over 2009.

Annual flat steel exports totaled 2.3 million tonnes, in line with the previous year’s figure.

Domestic prices are aligned with the price of imported products (including aggregated import costs).

In view of Brazil’s expected economic growth in the coming years, the Brazilian Development Bank (BNDES) believes steel output and apparent consumption will increase by 26.5% and 43.5%, respectively, through 2014.

Segments

Automotive

According to ANFAVEA (the auto manufacturers’ association), vehicle production reached 3.6 million units in 2010, 14% up on the year before.

Annual sales totaled 3.5 million units, 12% more than in 2009, marking the seventh consecutive year of growth and a new national record. In addition, Brazil closed 2010 as the world’s fourth largest vehicle manufacturer for the first time, behind China, the United States and Japan.

Exports totaled 766,000 units, versus 475,000 in 2009. According to ANFAVEA, sales are expected to grow by 5% in 2011.

Recently, the sector announced investments of R$9 billion over the next two years, allocated to the expansion of product lines, increased output and the construction of new plants.

Construction

According to a study by the Getúlio Vargas Foundation (FGV), every year 1.5 million new families intend to purchase a home. Demand for real estate has been fueled by the expansion of the emerging middle class, higher family income, more formal jobs and the greater availability of credit. For this reason, sector businessmen elected 2010 as the best year ever for the construction industry, marked by exceptionally healthy results and margins.

Housing loans from the Caixa Econômica Federal (Brazilian Saving Bank), the mortgage lending leader, totaled R$77.8 billion, 57.2% up on 2009.

LCA, a consulting firm, estimates that the sector grew by 13.9% in 2010, reflecting the positive performance.

According to SindusCon (the building industry association), construction GDP should record annual growth of 6.1% in 2011.

Distribution

According to INDA (the Brazilian steel distributors’ association), flat steel sales by distributors totaled 3.8 million tonnes in 2010, 13% up on the previous year, versus purchases of 4.3 million tonnes (+39%), resulting in increased inventories, which were sufficient for 4.3 months of sales in December, higher than the historical average.

INDA expects distributors’ sales to increase by around 10% in 2011, with inventories returning to normal by the end of the second quarter.

Agricultural machinery

According to ANFAVEA, in 2010 production of agricultural machinery increased by 34% over the previous year to 89,000 units.

Annual sales stood at 68,000 units, 24% higher than in 2009 and the sector’s best performance since 1976, while exports increased by 27% to 19,000 units.

In 2011, domestic sales are expected to remain stable, a positive trend given the exceptionally robust performance in 2010.

International

USA

According to the World Steel Association (WSA), U.S. crude steel production totaled 80.6 million tonnes in 2010, 38.5% more than the previous year, while the U.S. Department of Commerce estimated steel imports of 21.7 million tonnes, up by 47%.

Given strong pressure from raw material costs, steel plants are announcing flat steel price hikes. Hot-rolled coils that were being traded at around US$630/t FOB in 3Q10 were selling for US$836/t FOB in January 2011.

U.S. steel distributors’ inventories totaled 4.2 million tonnes in December 2010, equivalent to 2.6 months of sales.

Europe

According to the WSA, Eurozone steel production reached 315 million tonnes in 2010, 19% up on 2009.

As in the U.S., raw material cost increases have been forcing the industry to rethink pricing, resulting in hikes throughout the continent. According to CRU, German-produced hot-rolled coils, which sold for around US$703/t FOB in 3Q10, were trading at US$773/t FOB in January 2011.

Although demand for steel has been showing signs of recovery in certain countries, there are serious doubts concerning the sustainability of these prices, chiefly due to weak growth prospects in most European nations.

Asia

According to the WSA, crude steel output in China totaled 626 million tonnes in 2010, 9% up on the previous year and a new record, accounting for 44% of the global total.

Japan's crude steel production increased by a substantial 25% over 2009, reaching 109 million tonnes.

CRU’s figures also show price increases in China, with hot-rolled coils trading at US$740/t CIF in the first week of February.

Analysis of Results

The steel segment comprises the production, distribution and sale of flat steel in Brazil and abroad.

Net Revenue

In 2010, net revenue from steel operations came to R$9,926 million, 21% up on 2009, chiefly due to higher sales volume.

In 4Q10, net revenue from this segment amounted to R$2,121 million, 15% down on the R$2.493 million recorded in the previous quarter, primarily due to the reduction in sales volume and lower prices in the last three months of the year.

Total Sales Volume

CSN recorded total sales volume of 4.8 million tonnes in 2010, 17% more than the year before. Of this total, 86% was sold on the domestic market, 10% by overseas subsidiaries, and 4% went to direct exports.

Sales volume in 4Q10 came to 1.0 million tonnes, 12% down on the previous quarter. Out of the quarterly total volume, 82% were sold in the domestic market, 12% at overseas subsidiaries, and 6% were exported.

Domestic Sales Volume

Domestic sales totaled 4.1 million tonnes in 2010, a 28% improvement over the year before, fueled by stronger demand for flat steel in Brazil.

In 4Q10, flat steel sales came to 859,000 tonnes, 17% down on 3Q10, chiefly reflecting the steel distributors’ high inventories.

Exports

CSN exported 661,000 tonnes in 2010, 24% less than the previous year. Sales by CSN LLC and Lusosider totaled 484,000 tonnes, while direct exports totaled 177,000 tonnes. The reduction was due to the Company’s strategy of favoring the domestic market, where margins are higher.

Fourth-quarter exports totaled 185,000 tonnes, a 16% improvement over the previous quarter. Sales by CSN LLC and Lusosider reached 129,000 tonnes, while direct exports totaled 56,000 tonnes.

Prices

In 2010, net revenue per tonne averaged R$2,019, 5% above the 2009 figure, reflecting higher export prices and the greater share of domestic sales in the sales mix.

Net revenue per tonne averaged R$1,972 in 4Q10, a 4% reduction over 3Q10.

Production

CSN (Parent Company) crude and rolled steel production totaled 4.9 million tonnes and 4.7 million tonnes, respectively, in 2010, corresponding to respective annual increases of 12% and 15%.

In 4Q10, CSN produced 1.3 million and 1.1 million tonnes of crude steel and rolled steel, respectively.

13

Cost of goods sold (COGS)

Steel segment COGS came to R$6.09 billion in 2010, 9% up on the R$5.57 billion posted in the previous year, basically as a result of higher sales, partially offset by the greater dilution of fixed costs.

In the fourth quarter, COGS stood at R$1.48 billion, 3% down on the R$1.53 billion recorded in 3Q10, chiefly due to the reduction in steel products sales volume.

Production costs

In 2010, the parent company’s total production costs stood at R$5.57 billion, R$1.02 billion more than the R$4.56 billion reported in 2009:

Raw materials: increase of R$646 million, primarily related to the following inputs:

• Coal: upturn of R$197 million, basically due to the higher acquisition cost and increased consumption;
• Slabs and coils acquired from third-parties: increase of R$210 million;
• Pellets: growth of R$110 million, due to the higher acquisition cost and increased consumption;
• Metals: upturn of R$71 million, due to the higher acquisition cost and increased consumption;
• Other raw materials: increase of R$58 million.

Labor: rise of R$102 million, due to the pay increase resulting from the collective bargaining agreement and the merger of Galvasud in January 2010.

General costs: increase of R$223 million, chiefly due to:

• Energy and fuel: upturn of R$125 million, particularly related to natural gas and electricity;
• Maintenance, supplies and other costs: growth of R$98 million, basically due to scheduled maintenances in the period.

Depreciation: increase of R$47 million due to new asset incorporations.

In 4Q10, total production costs came to R$1.42 billion, in line with the third-quarter figure.

14

Adjusted EBITDA

Adjusted EBITDA totaled R$3,776 million in 2010, 44% up on the R$2,623 million recorded in 2009, basically due to higher domestic sales, accompanied by an adjusted EBITDA margin of 38%, 6 p.p. higher than the 32% reported in the previous year.

In 4Q10, steel segment adjusted EBITDA came to R$632 million, 34% down on the R$957 million posted in 3Q10, chiefly reflecting the period reduction in sales and prices, with an adjusted margin of 30%, versus 38% in 3Q10.

Scenario

At the beginning of 2010, the incentives to boost economy were still in force, many of which focused on the intensive use of steel. The commitment of the leading global economies to overcoming the crisis, albeit each to a varying degree, was crucial to the recovery of the market as a whole.

As a result of the recovery, iron ore sales, mostly concentrated in the Chinese market in 2009, became more fragmented.

Nevertheless, China remains a major market player. In 2010, the country imported 619 million tonnes of iron ore, accounting for 60% of the seaborne market, and this figure is expected to reach 895 million tonnes by 2015, according to CRU.

2010 will be remembered as a year of major changes in the iron ore market. The traditional pricing system, used for over 40 years, was replaced by a system that reflects market oscillations and is subject to periodic reviews over time.

Demand continues to outpace supply on the seaborne market and certain factors in 2010 helped reduce supply even further, including government restrictions on iron ore exports in India, accompanied by the imposition of export taxes. In addition, the monsoons were more aggressive than initially expected, reducing port productivity. The vast majority of new projects (brownfield and greenfield) were delayed and the expected increase in available market volume did not materialize.

Given this scenario, Brazil’s iron ore exports reached the record level of 307 million tonnes in 2010, according to LBH Group, 15% up on the previous year.

The government recently launched a National Mining Program, which envisages investments of US$270 billion over 20 years and is designed to triple the production of iron ore, copper ore and other minerals by 2030.

Iron ore spot prices, which averaged US$174/t CFR in December 2010, had already reached US$190/t in the third week of February. Prices are expected to keep moving up in the first half, fueled by increased demand in China and the recovery of the European and North American markets.

Analysis of Results

The mining sector comprises the mining and sale of iron ore (the Casa de Pedra mine and a 60% interest in Namisa) and tin (ERSA), in addition to port terminal operations (Tecar).

Iron ore sales

In 2010, total sales of finished iron ore products by CSN and Namisa to third parties amounted to 25.3 million tonnes¹, 13% more than in 2009. Of this total, exports accounted for 23.8 million tonnes and Namisa sold 16.9 million tonnes.

In 4Q10, sales of finished iron ore products by CSN and Namisa totaled 6.4 million tonnes¹, 8% down on 3Q10 due to maintenance in the Port of Itaguaí. Exports accounted for 6.0 million tonnes and Namisa sold 4.9 million tonnes. In comparison with 4Q09, sales volume of iron ore products grew by 7%.

The Presidente Vargas Steelworks absorbed 6.9 million tonnes in 2010, 1.9 million tonnes of which in the fourth quarter.

(1) Production volume, purchases and sales include 100% of the stake in Namisa.

Considering CSN’s 60% interest in Namisa, sales came to 18.6 million tonnes in 2010, 6% up on 2009. According to the same criterion, 4Q10 sales volume totaled 4.5 million tonnes, 8% up on 4Q09.

Net Revenue

Net revenue totaled R$3.6 billion in 2010, 84% up on 2009, fueled by the increase in prices and higher sales volume.

In 4Q10, net revenue totaled R$1.1 billion, 8% less than the previous quarter due to reduced sales, and 159% up year-on-year.

Cost of goods sold (COGS)

Mining segment COGS totaled R$1.2 billion in 2010, in line with the 2009 figure despite the 6% increase in sales volume.

In the fourth quarter, COGS came to R$330 million, 11% less than in 3Q10.

Adjusted EBITDA

Adjusted EBITDA stood at R$2.4 billion, 201% up on 2009, reflecting higher iron ore prices and the upturn in sales volume, accompanied by an adjusted EBITDA margin of 67%, a 26 p.p. year-on-year improvement. Adjusted EBITDA totaled R$791 million in 4Q10, 5% down on the previous quarter, basically due to the reduction in sales volume, and a massive 330% up year-on-year. The adjusted EBITDA margin was 71% in 4Q10, 2 p.p. and 28 p.p. more than in 3Q10 and 4Q09 respectively.

Scenario

Railway logistics

2010 was a positive year for the rail logistics sector. According to the ANTF (National Rail Transport Association), transported volume grew by 15% over 2009, exceeding 455 million tonnes. Underlining the sector’s dynamism, the number of rail cars produced moved up by a hefty 223% over the year before to 3,300, according to Abifer (Brazilian Railway Industry Association).

With investments by private enterprise and support from the government, the outlook is exceptionally promising. The government believes the rail network will extend for 41,000 kilometers by 2020, 37% more than the current total.

Port logistics

According to Antaq (National Waterway Transport Agency), handled volume totaled 558 million tonnes in 2010 through September, 22% up on the first nine months of 2009 and a new sector record. In the same period, container volume increased by 14.2% year-on-year to 5.4 million TEUs. There was a big upturn in foreign trade, leading Antaq to predict annual volume of 760 million tonnes in 2010.

Analysis of Results

This sector encompasses railway logistics, via the Company’s interest in two companies (MRS Logística and Transnordestina Logística) and port logistics, through the Sepetiba Tecon terminal.

1. Railway logistics

MRS

MRS Logística has a concession to explore public rail cargo transport services in the Southeastern Network of the Federal Railways, operating with integrated logistics, planning, multimodality and established transit times. CSN holds, directly and indirectly, 33.27% of MRS Logística’s voting capital.

In 2010, MRS transported 144 million tonnes.

Transnordestina

The project for the new network of Transnordestina Logística, the concessionaire operating the Northeastern Network of the Federal Railways, is designed to make the Company the integrated logistics leader in the Northeast region, connecting Piauí to the Port of Suape, in Pernambuco, and the Port of Pecém, in Ceará. The new network, 1,728 km long and scheduled to be concluded at the end of 2013, will increase rail transport capacity to 30 million tonnes per year.

The project is expected to absorb total investments of R$5.4 billion, funded by CSN, the controlling shareholder, FINOR (Northeast Development Fund), the federal government (through Valec) and loans from

SUDENE (Northeast Development Board), the BNDES (Brazilian Development Bank) and BNB (Banco do Nordeste do Brasil).

In 2010, 1.5 million tonnes were transported, led by fuel, cement, aluminum, coils and malt, among others.

Analysis of Results

MRS and Transnordestina’s individual results had not been announced up to the publication of this release. In 2010, consolidated net revenue from railway logistics totaled R$838 million, COGS stood at R$522 million and adjusted EBITDA came to R$349 million, accompanied by an adjusted EBITDA margin of 42%.

2. Port logistics

TECON

Sepetiba Tecon, a container and general cargo terminal managed by CSN, is the largest container terminal in Rio de Janeiro, and one of the largest in Brazil. It also operates as a Hub Port. Apart from containers, Sepetiba Tecon also handles CSN’s steel products and general cargo.

Analysis of Results

In 2010, consolidated net revenue from port logistics amounted to R$119 million, COGS came to R$70 million and adjusted EBITDA totaled R$38 million, with an adjusted EBITDA margin of 32%.

Scenario

Preliminary figures from SNIC (the Cement Industry Association) indicate local cement sales of 59 million tonnes, 15% up on the previous year. The Southeast region consumed half of this total and the North was the best performer in terms of growth, moving up by 58%. Estimates point towards a new record in 2011, with sales climbing by between 8% and 9% to 65 million tonnes.

Annual exports fell by 23%, as manufacturers prioritized the domestic market.

Currently, there are 70 plants operating in Brazil, belonging to 12 national and international groups, with a joint annual installed capacity of 67 million tonnes, sufficient to meet all of domestic demand.

Strong investments in capacity expansion were also announced in 2010, the effects of which should become apparent in the second half of 2011.

The sector’s growth in the coming years will continue to be fueled by increased income and employment, incentives for homebuyers, the expansion of Brazil's infrastructure and the intensification of the works related to the World Cup and the Olympic Games.

Analysis of Results

Net revenue from cement totaled R$202 million in 2010, 234% up on 2009, from the sale of 992,000 tonnes, up by 193%. This significant increase in sales does not consider the full operation of CSN cement segment, which is in process of growth.

COGS came to R$164 million, 169% more than in 2009, pushed by the increase in sales.

Adjusted EBITDA was a positive R$9 million, a R$17 million improvement over the negative R$8 million posted in 2009, accompanied by a positive adjusted EBITDA margin of 4%, versus a negative 13% in the previous year.

Scenario

In 2010, the electric power market was favored by Brazil’s excellent economic performance, led by the domestic market, driven by increased employment and income, as well as the greater availability of credit.

Electricity consumption grew by 7.8% over 2009, according to the Ministry of Mines and Energy’s Energy Research Company.

Industrial consumption made the biggest contribution, moving up by 10.9% and consolidating the post-crisis recovery begun in the second half of 2009. Residential and commercial consumption recorded consistent growth of 6.3% and 5.9%, respectively, in line with recent years.

Even with the growing demand for electric power, the country has been adequately incrementing its generating capacity and safely meeting the demand. According to the Annual Energy Operations Plan (PEN 2010), published by the National System Operator (ONS), the National Integrated System’s structural energy balance for the next four years must ensure adequate supply, even in adverse hydrological conditions.

This situation is largely the result of the energy auctions promoted by the government, as well as the contracting and construction of new transmission lines, which has permitted greater energetic integration among Brazil’s various regions.

Given that electricity is crucial to CSN’s production processes, the Company has been investing in power generation assets to ensure self-sufficiency. In addition to the thermal co-generation plant, which is fueled by residual gases from steel production in the Presidente Vargas Steelworks in Volta Redonda, the Company retains an interest in:

The Company also created CSN Energia, whose main purpose is the distribution and sale of surplus electricity generated by the Company itself and by companies, consortiums or other undertakings in which it holds interest.

CSN’s results from the energy segment include the operations of Itasa and CSN Energia. Energy generation costs from the thermal co-generation plant and the Igarapava hydro plant are directly appropriated into the production costs of the steel plants and the mines (Casa de Pedra and Arcos), respectively.

Analysis of Results

In 2010, net revenue from electricity amounted to R$113 million, in line with the previous year.

COGS totaled R$42 million, 4% down on the R$43 million reported in 2009.

Adjusted EBITDA was positive by R$69 million, in line with the 2009 figure.

Share Performance

In 2010, CSN’s shares depreciated by 2%, versus the 1% upturn recorded by the IBOVESPA in the same period.

On the NYSE, CSN’s ADRs appreciated by 8%, versus 11% for the Dow Jones.

It is worth noting, however, that in the last five years CSN’s stock has generated returns of 332% for its shareholders, three times more than the 107% upturn in the IBOVESPA in the same period.

Daily traded volume in CSN’s shares averaged R$106 million in 2010, while on the NYSE daily traded volume in CSN’s ADRs averaged US$88 million.

Source: Economática

* Figures were retroactively adjusted to reflect the share split occurred on March 25, 2010.

INCOME STATEMENT
CONSOLIDATED – Corporate Law – In Thousand of R$

INCOME STATEMENT
PARENT COMPANY – Corporate Law – In Thousand of R$

BALANCE SHEET
Corporate Law – In Thousand of R$

CASH FLOW
CONSOLIDATED – Corporate Law – In Thousand of R$

SALES VOLUME AND NET REVENUE (STEEL)

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SALES VOLUME (Thousand tonnes)

NET REVENUE PER UNIT (R$/ton)

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This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.