She asked if anyone had cold feet. Our hand shot up. Our legs shot out. Our shoes flew off. Fate took its course.

Apart from our new found foot-warmth, something else is giving us a warm glow today. The coal boom isn’t over yet. You haven’t missed it. That’s reason to celebrate. A Lleyton Hewitt-style show of fist-pumping bravado might be in order.

Coal prices might be staying higher longer than anyone expected.

Dalrymple Bay terminal is one of the largest coal ports in the world. It can ship 65 million tonnes of coal in a year. That isn’t enough to feed all of China’s coal power plants. But it makes Dalrymple a focal point for Queensland’s coal production.

Babcock and Brown, infrastructure owner and not much else these days, owns the port. It heralded an ambitious expansion at Dalrymple last year. By December, total capacity would be 85 million tonnes.

Funny thing, ambition…

It won’t happen. That’s not Babcock and Brown’s fault. Rains came. Builders languished. The new expansion will be finished in March at best.

That means supply of coal to China will be a few million tonnes shorter than investors expected. That may not sound like much. China’s imported 51 million tonnes of coal last year. Who gives a hoot about an extra 3 million?

We do. We give many hoots. We’ve got a truckload of hoot coming your way. We’ll explain why in a minute.

First, a key point. We were surprised to find that Newcastle, Australia’s other big coal port, just announced an 18% fall in shipments. You’d think coal producers would be swarming the place while Dalrymple’s full.

There’s nothing wrong with Newcastle. But the same rains that hit the port in Queensland delayed the miners themselves. They simply don’t have the coal to ship.

The grand new coal expansion is certainly having a few teething problems.

Now…the important part.

This is a marginal situation. Marginal situations are a type of investment idea that often escapes the average person’s attention. They don’t look particularly enthralling on the surface. But everything happens at the margin.

A premium example is Saudi Arabia’s oil production. The world uses 86 million barrels of oil per day. Saudi Arabia produces around 9 million. It’s special because it has the ability, although limited, to add new production. Most other countries are running at full capacity.

The world oil market is stretched tight, like a fitted bedsheet on an expanding air-bed. But the bed is growing as more Asians buy cars. Saudi Arabia may be the only corner of the sheet left with any give.

But here’s the thing… it doesn’t need to add millions of barrels of new oil to have a significant affect. It announced an extra 350,000 barrels yesterday. That’s only 0.4% of world oil demand. Tiny. Miniscule. Marginal.

Well, the oil price fell US$3. More on that below.

You see, it doesn’t take a lot to move a tight market. So if China misses out of 3 million tonnes from Dalrymple Bay when it wants 50 million overall…that’s quite a lot.

Website Globalcoal keeps indexed prices of coal. It also keeps track of the prices at major ports like Newcastle. They’ve all had big movements in the last couple of weeks. One index shifted 14%.

The short story is that coal prices may just keep rising. It’s not too late to invest here. It’s still a hot asset. And there just isn’t enough of it. That’s the kind of asset you want to hold.

–The Fed is trying to soften the blow of falling asset prices by making it possible for homeowners to refinance into longer-term loans at lower rates, and then ride out the bear market in housing and credit. In other words, the Fed has kicked the dollar to the curb. It’s on its own now.

–That doesn’t mean the dollar won’t really from time to time. As a proxy for economic growth, there will be times in the coming years, let’s call them false dawns, where the U.S. economy appears to be emerging from the slump, or is at least growing faster than Europe’s sluggish economy. But the long-term trend for the dollar index is lower highs and lower lows. For gold and oil, it’s just the opposite, higher highs and higher lows.

–Speaking of highs and lows, our friend Dr. Joanne Nova at GoldNerds.com read our note yesterday about the challenges of deep-water drilling. But drilling deep is a challenge anywhere, even on land.

–”Here’s another perspective on the difficulty of drilling Brazil’s new oil field a full 10km below the surface,” Joanne writes. “Did you know the deepest hole ever dug reached down to 12km, but it took 19 years to get there? The Soviets started planning the Kola Superdeep Borehole in 1962 and began drilling in 1970 reaching the record depth in 1989.

–”They initially aimed to reach 15km, but were forced to give up a few years after they set the record. Things were too hot, too strange, and too expensive. And this was not a hole designed to produce anything except interesting scientific papers. Twelve kilometers down, the rocks were under so much heat and pressure they behaved more like plastic than rock. The hole apparently kept flowing closed whenever they had to replace a drill bit. Makes production hard if the hole keeps disappearing.”

–Yes it does.

–Incidentally, Australia’s deepest on-shore drilling effort doesn’t have anything to do with oil, gas, or mining. It is energy related though. Geothermal hopeful Geodynamics (ASX:GDY) finished drilling its Habanero 3 well in early February to a depth of 4,221 metres.

–Even if you don’t get all the way through the Earth’s crust at that depth, it’s still pretty hot down there, which is the whole point. Geodynamics hopes to be operating Australia’s first commercial geothermal electric generating plant by the end of this year, with a capacity of 50 megawatts per year.

–We know a bit about the project and the share because we tipped it in the Australian Small Cap Investigator. The credit crunch has not been kind to small-cap stocks in general or alternative energy stocks in particular. But if you look at these stocks in terms of their ability to generate future earnings, there is a lot to like. The assets should produce growing cash flows, and who doesn’t like that?

–We showed a chart a few weeks ago demonstrating that GDP growth and electricity are pretty well correlated. A growing economy needs its energy doesn’t it? Australia’s economy is growing and so are its energy needs.

–Perhaps that’s why Citigroup reckons Origin Energy (ASX:ORG) will grow its earnings by 16% a year for the next five years, according to Rebecca Keenan at Bloomberg. And perhaps that’s why Britain’s BG Group Plc. offered to buy Origin for $12.9 billion. That represented a 40% premium on yesterday’s closing share price of $10.47. Proving that markets can sometimes be pretty darn efficient, Origin is up 37% in early trading.

–As a trade, we might even consider shorting or buying puts. After all, Origin hasn’t accepted the bid yet. But our interest isn’t in trading these events, it’s in anticipating them. BG’s bid is based on asset quality and earnings growth. It’s a stock picking story, not a China narrative, although the two are related. Take iron ore.

–”Right now, I think this is the best stock picker’s market in resources that we’ve seen for quite some time,” says fund manager James Bruce in today’s Financial Review. He could not be more right.

–He was referring to today’s breaking news that China’s first-ever hostile takeover of an Australian company-Sinosteel’s $1.37 billion bid for Midwest (ASX:MIS)-looks like it will go through. Midwest is in a trading halt this morning, suggesting an announcement could be forthcoming.

–Sinosteel raised its bid for Midwest from $5.60 a share to $6.38 a share. This seemed to please the board of Midwest, which had been holding out for $7 a share. It probably doesn’t hurt that, as Michael Vaughan reports in today’s Financial Review, Sinosteel agreed to support the issue of 15 million options to two Midwest directors.

–The exercise price on the options is $1.46. With the bid at $6.38, that means those 15 million options are worth about $73.8 million. That’s a nice pay day, if you can get it. We’ve always said that owning your own business is the only real way to get wealthy.

–”China was busy last night,” writes Diggers and Drillers editor Al Robinson. “It closed the net around one little iron miner, and took stakes in a couple of others. It looks like Chinese steel mills are focusing on the leaders in the second tier of iron companies. By that, we mean the companies outside of BHP, Rio Tinto and Fortescue who have the best-developed assets.

–The “other” company which Sinosteel appears to have set its sights on is Murchison Metals (ASX:MMX). Al has more details over at Money Morning. The entire mid West region of Western Australia is ripe for this sort of Sino-Japanese financing and takeover. The ore in the region is a little lower quality than the famous hematite of the Pilbara. The infrastructure doesn’t exist yet, either, to move that ore from mine to port and on to points North.

–On that score, keep your eyes on May 9th . That’s the deadline for proposals to be submitted to the WA government for building out the iron ore infrastructure in the mid West. There are two major proposals, one backed by China and one essentially backed by Japan.

–In the meantime, if you want to catch up on who the junior producers are in the mid West, you may want to introduce yourself to the Geraldton Iron Ore Alliance. Don’t be shy. She’s friendly.

–There are seven firms in the alliance. Mount Gibson (ASX:MGX), MidWest (ASX:MIS), Gindalbie (ASX:GBG), Murchison (ASX:MMX), GoldenWest Resources (ASX:GWR), Royal Resources (ASX:ROY), Asia Iron Holdings (not listed), and Atlas Iron Limited (ASX:AGO).

–Who will win? This is where we reach the limits of the free security analysis we provide in the DR. The heavy lifting and deeper digging goes on at Diggers and Drillers. We will tell you that valuing the companies comes down to looking at the quality of their assets and their ability to finance projects without a lot of debt.

–Better hurry, though. “The Chinese invasion of corporate Australia is continuing apace with Chinese Iron and Steel Group announcing plans to lift its stake in outback prospector Apollo Minerals to 19.9pc, just short of the 20pc level that would require it to mount a full takeover under Australian law,” according to David Litterick in Britain’s Telegraph.