Commodity prices have not been kind to investors, nor to those companies mining the commodities, since about the middle of 2012. With the potential for a bottom, now could be a great time to open a mining position for the long term. This could be especially true if a bottom in copper and gold prices is combined with an equalizing balance between supply and demand. According to Motley Fool analyst Taylor Muckerman, Freeport-McMoRan (FCX 2.40%) might be worth a glance.

As for natural gas producers, a lot of them struggled through 2012 due to the pricing collapse that caught many of them off guard. The low-cost producers were able to barely scrape by, so they should be worth a look now that the price of natural gas has climbed above $4 per million British thermal units. Motley Fool analyst Joel South happens to like Chesapeake Energy (CHKA.Q) and Devon Energy (DVN 0.98%) in this space.