A look at U.S. coal mining disasters in recent years:

2001: Explosions at a Jim Walter Resources Inc. mine in Brookwood, Ala., kills 13 people.

1992: A blast at a Southmountain Coal Co. mine in Norton, Va., kills eight.

1989: An explosion at a Pyro Mining Co. mine in Wheatcroft, Ky., kills 10.

1986: A coal pile collapses at Consolidation Coal Co.'s mine in Fairview, W.Va., killing five.

1984: A fire at Emery Mining Corp.'s mine in Orangeville, Utah, kills 27.

The deadliest coal mining disaster in U.S. history was an explosion in 1907 in Monongah, W.Va., that killed 362 people.