Coal spot prices hit their lowpoint in June, 2009. Since then, they have been gradually rising. My biggest position is ARLP since they have said, publicly, that they expect earnings to go up 25 to 40% this year (they are bringing on a new coal mine). However, NRP is not bad either.
I think I posted the report on coal that was positive for coal investments but specifically said to stay away from NRP and other master limited partners which may not be able to maintain their dividends.
This explains the drop in price a couple of days ago.