An explosion at a Ukrainian coal mine killed at least 16 miners Friday and nine were still missing, the Emergencies Ministry said.
Three miners were also hurt in the explosion at the Sukhodilska-Eastern mine in the Luhansk region in the former Soviet republic's coal mining heartland.
"The cause of the blast is being determined," the ministry said in a statement.
Interfax news agency quoted a regional mining official as saying the explosion was caused by a concentration of methane gas inside the mine, where 252 people were working at the time.
The explosion in the early hours of Friday morning was the deadliest since 2007, when a methane blast at a nearby mine killed more than 100 people.
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President Viktor Yanukovich and Prime Minister Mykola Azarov planned to fly to the accident site, their offices said. Yanukovich ordered the government to set up a commission to investigate the blast.
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In a separate accident Friday, a piece of heavy machinery collapsed at a state-owned coal mine near the town of Makeyevka in the neighboring Donetsk region, killing one person and injuring eight, the Emergencies Ministry said.
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Ukraine has been plagued by accidents caused by poor infrastructure and lax safety regulations.
The blast-hit mine is owned by Krasnodon Coal, Ukraine's second largest mining company which is part of Metinvest, a firm run by Rinat Akhmetov, Ukraine's richest man and a sponsor of Yanukovich's 2010 presidential campaign.
In 1992, 58 people were killed in a methane explosion at the same mine. A fire broke out at the mine last month but no one was hurt.















