There has been a lot of folks waiting to see CSX's 1st quarter earning report. Some are using this a gauge of how the economy is expected to do this year. Usually railroads will see traffic rise or fall 4-6 months before it hits Wall Street reports.
Below is a link to the report.
There is a great table on page 9 showing the revenue by product, profit by product and the profit by unit. If you ever wondered how much a RR might earn for products carried, here you go.
CSXT 2009 1st Quarter report