Cliffs Natural Resources (CLF) is a leading mining and natural resources company in the U.S., and is also the largest producer of iron ore pellets in North America. It competes with other international mining and natural resources companies like Vale, BHP Billiton (BHP) and Rio Tinto (RTP).

Cliffs' North American Iron Ore division accounts for more than two-thirds of the company's total revenue, and around 60% of Cliffs' stock value, by our estimates. Long-term contracts with customers like ArcelorMittal (MT), Algoma and Severstal ensure substantial sales of the firm's mineral produce.

"Once written off as a 'sunset' industry, North American railroads are making money hand over fist. In short, the railways are benefiting from a rising tide and the companies have a lot going for them," notes Canadian analyst Tom Slee.

The contributing editor with Internet Wealth Builder explains, "Here's a look at my newest recommendation, Canadian Pacific Railway (CP), as well as my long-time favorite, Canadian National Railway (CNI).

"Last year the six major carriers posted a 45% average growth in earnings as they booked increased volumes and increased rates.

This post is part of Japan: A Special Report for Investors.

"Uranium and nuclear power stocks are the most directly impacted by events in Japan. In my view, this isn't the time to sell uranium plays," says Elliott Gue, who continues to recommend Cameco Corp. (CCJ), the leading uranium mining company.

The editor of The Energy Strategist explains, "Investors looking for a road map of what's likely to transpire over the next few weeks should recall the Macondo Oil spill in the Gulf of Mexico in late April 2010.

This post is part of Japan: A Special Report for Investors.

"Without underestimating the magnitude of the tragedy and human suffering following the earthquake in Japan, we recommend investors buy into Japan amid the current market weakness," says Yiannis Mostrous.

The Asian stock expert and editor of Global Investment Strategist explains, "The tragic earthquake in Japan has roiled markets, but the country's long-term strength remains intact. This is a good time to establish long-term positions in some of Japan's best companies, such as Mitsubishi Corp. (MSBHY).

The Financial Times has seen a U.S. diplomatic cable from WikiLeaks that states that Iran has bought significant amounts of gold. The word is that Tehran holds 300 tons of gold, up from 169 tons in 1996.

Gold, oil and the U.S. dollar: The oil-rich Middle East sells oil throughout the world. Oil is priced in dollars. The U.S. dollar is the reserve currency for oil. That means that Mideast countries are loaded with U.S. dollars.

General Mills (GIS) is buying a 50% stake in Yoplait from PAI Partners for roughly $1.1 billion, Reuters reported Thursday, citing sources close to the deal.

The deal is a nice fit for both companies. Yoplait is second to Danone (DANOY) in the yogurt market. General Mills has the industry presence to promote the Yoplait brand, something that would benefit PAI.

For General Mills, Yoplait would add an another revenue stream to an already diversified conglomerate. Some of General Mills' products include cereals, Haagen-Dazs ice cream, Green Giant vegetables and Progresso soup. The company has already been distributing Yoplait for 30 years, so the distribution network is already in place.

• WTI crude was up $3.67 per barrel to $101.67. Brent crude rose $2.10 per barrel to $110.62.
• In the grain market, June wheat futures rose 48-2 cents per bushel to $7.10 per bushel.
• Corn futures were up the 30 cent limit to $6.46 per bushel.

Japan has closed 11 nuclear plants. They will need a different energy source to replace their nuclear losses. Natural gas is one such energy source. Natural gas must be liquefied for transport. Much of the liquefied natural gas (LNG) supply could come from Europe.

One company, Golar (GLNG), has a fleet of transport ships that can carry LNG. Their ships have the capacity to dock at a port and transfer their LNG supply to an onshore receiving unit. Their ships have special units that can do the transfer operation. The fleet is capable of carrying 1.7 cubic meters of LNG.

"The last time I focused on commodities was back in 2009 when the recovery was piecing itself together. Now, most of the pieces of the recovery are in place, with the notable misfits being job creation and home values," notes Jim Lowell, a leading specialist on Fidelity funds.

The editor of Fidelity Investor explains, "Today, commodities are in increasingly short supply as increasing global consumer demand, geopolitical disruptions, and even Mother Nature have taken their toll on the supply of goods and services.

Except for the safe haven of U.S. treasuries and the U.S. dollar, most other commodities are getting slaughtered in the wake of the Japanese crisis.

Here are some prices of nearby contracts compared to five days ago:

• WTI crude is trading at $97.68 per barrel, down from $105.
• Wheat is at $6.89 per bushel, down for $7.89.

The rebuilding of Japan will require large amounts of basic materials. One such material is cement. Cement is used in virtually every type of large building or factory.

It might be helpful to look at some cement stocks. Here are just a few, along with their recent share prices:

• Lafarge Coppee (LFRGY): $14.00. One of the world's largest cement and gypsum manufacturers.

Every major crisis has its winners and losers. With the Japanese crisis, most prominent may be the uranium stocks. As you might guess they are getting hammered. The presumption is that governments will be reluctant to approve nuclear projects in the wake of Japan's nuclear meltdown.

Here are just a few companies and recent stock prices:

• Denison Mines (DNN): $2.55, down 74 cents. Denison is a worldwide mining and exploration company. It has two uranium waste recycling plants in the U.S.

The crisis in Japan will require all sorts of construction materials for rebuilding destroyed buildings and factories. Steel is used in most construction projects. Here in the United States, U.S. Steel (X) is a dominant player.

Let's look at the company profile and earnings reports. "Based in Pittsburgh, the company operates mills throughout the Midwest, in Ontario, Canada, Serbia and Slovakia. The company makes semi finished steel, tubular and plate steel and tin products. Its annual production capacity is about 32 million tons of raw steel. The company's customers are from autos, chemical and steel service center industries."