Cleveland-Cliffs Inc (NYSE: CLF), founded 160 years ago, is a global mining operator. It's the biggest producer of iron ore pellets in North America and is a major supplier of metallurgical coal. Over the past year, Cleveland's stock price has gone from $28.20 to a high of $121.95. No doubt, the company has benefited handsomely from the surge in the steel market.

Today, Cleveland has offered to pay $128 per share – a cool $10 billion – for Alpha Natural Resources, Inc. (NYSE: ANR), a high-quality Appalachian coal supplier. The expected pro forma enterprise value of the merged companies, which will be called Cliffs Natural Resources, is expected to be about $22 billion.

The metrics on the deal look enticing. By 2009, Cliffs should have revenues of $10 billion and EBITDA of $4.7 billion. Moreover, by 2010, there are expected to be at least $200 million in annual synergies.

All in all, the deal will increase scale, which is becoming essential as the steel industry consolidates. For example, Cliffs will have reserves of about one billion tons of iron ore and one billion tons of metallurgical and thermal coal.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates MergerBook.com.