Not-for-squeamish U.S. Steel (NYSE: X) is rising on schedule, despite a recent pull-back, which is why I'm reiterating my Buy rating for the company, first recommended on April 15, 2009, at a price of $27.61. If you bought X in April, you're up about 28%.

The rationale for owning X's shares remains the same. U.S. Steel will likely be a survivor in the consolidating global steel sector with sufficient scale to either produce raw materials and acquire raw material assets.

It was good news bad news for the steel industry Tuesday. AK Steel Holding Corp. (NYSE: AKS) and United States Steel Corp. (NYSE: X) both reported better-than-expected third-quarter results. But for U.S. Steel, it was the third straight quarterly loss as the economic downturn continued to drag down demand.

For the three months that ended in September, U.S. Steel said it lost $303 million, or $2.11 per share. That compares with a profit of $919 million, or $7.79 per share, in the same period of last year. Revenue for the quarter fell 61% to $2.82 billion. Analysts surveyed by Thomson Reuters had expected a loss of $2.87 per share on revenue of $2.72 billion.

With crude oil prices soaring, shares in coal and fertilizer companies have also been climbing for the past year. Barron's offers a survey of the momentum plays, pointing out some opportunities and risks when investing in coal and fertilizer stocks.

Talking about risks, Barron's underlines the fact that it can be difficult for investors to put their hard earned money into a stock that is already trading near its highs. But as they say, the trend is up unless proven otherwise, and we might take this into account when picking our trades. For example, back in April, it looked like Mosaic Co. (NYSE: MOS) was facing technical weakness, but this did not last long and the company was able to rebound.

Now let's take a took at the coal sector. Data shows that the Dow Jones U.S. coal index gas gained more than 50% for the past year. While James River Coal Co. (NASDAQ: JRCC) has quadrupled this year, Peabody Energy Corp. (NYSE: BTU) has been seeing some weakness, and this might be a sign that the sector could face tough times ahead. The first concern tied to supply and demand appeared for Peabody when we began to notice that volume on rally days slipped, while volume on declining days has increased.