Independent investigator Davitt McAteer, right, talks with United Mine Workers safety director Dennis O'Dell prior to Tuesday's legislative hearing on the Upper Big Branch Mine Disaster.

UMW safety director Dennis O'Dell testifies about the union's investigation into the April 2010 explosion that killed 29 miners at non-union Massey Energy.

Gazette photo by LAWRENCE PIERCE.......'MINEHEARING'.......8x6.14.......Davitt McAteer,(right) talks with Dennis O'Dell before the mine safty hearing at the Capitol.......2/7/12.......