China's official news agency says at least 92 people are reported dead and 16 missing after Saturday's blast at a mine near the Russian border.

Search teams in mining carts have been descending in what authorities continue to call a rescue mission. Authorities say the missing miners are trapped about a third of a mile underground.

Local miners have been gathering in freezing weather near the still-steaming shaft of the nearly 100-year-old mine.

This weekend's accident is being called the deadliest in China's mining industry for two years. It's also throwing a spotlight on the human cost of the heavy demand for power-generating coal in China.

A provincial governor says development is important, but it "shouldn't be achieved at the price of miners' blood."