Officials for federal and state safety agencies say the incident occurred just after 8:45 pm yesterday at Brody Mine No 1 in Boone County.
Amy Louviere of the federal Mine Safety and Health Administration say the miners' bodies were recovered.
The state Office of Miners' Health, Safety and Training identifies the workers as 48-year-old Eric D Legg and 46-year-old Gary P Hensley.
No additional injuries or trapped workers are reported. The state agency says preliminary indications show that a coal outburst was responsible but provided no other details.