CHRONOLOGY: Coal mine disasters in Russia

(Reuters) - Rescuers on Tuesday found one survivor in a Siberian coal mine, after a gas explosion killed at least 106 in Russia's worst mining disaster for over a decade.

Smoke, pockets of gas and collapsed roofs were hampering rescue efforts at the Ulyanovskaya mine in the region of Kemerovo, officials said.

Following is a chronology of major disasters at Russian coal mines in the last 10 years:

December 1997 - A methane gas explosion rips through the Zyryanovskaya mine in the city of Novokuznetsk in western Siberia, killing more than 30 miners.

January 1998 - A powerful explosion at the Tsentralnaya mine in the Arctic town of Vorkuta kills 27 miners.

January 13, 2002 - At least five people die in a methane gas blast at the Vorkutinskaya mine in the northern Komi Republic.

October 29, 2003 - Five miners are killed in a methane blast at a mine in the Far Eastern town of Partizansk.

April 10, 2004 - A gas explosion at the Taizhina colliery in Siberia's Kemerovo region kills 45.

October 28, 2004 - A methane blast at the Listvyazhnaya mine in Siberia kills at least 13.