Chinese rescuers are working to pull out six workers and are searching for another 19 after a mine collapsed in the eastern province of Shandong.
Four people were pulled to safety after the gypsum mine owned by Yurong Commercial and Trade caved in on Friday, according to a statement by the Pingyi county government.
Rescuers located six people trapped in the mine and were working to bring them to safety, local authorities said, adding that another 19 were still missing.
Gypsum is a soft sulfate mineral that is widely used in construction.
The mine collapse comes just days after a landslide from a man-made pile-up of construction waste in the southern city of Shenzhen killed one person and left another 75 missing and presumed dead.
China's mines have long been the world's deadliest, but safety improvements have reduced deaths in recent years.
Last year, 931 people were killed in mine accidents throughout China, drastically down from the year 2002, when nearly 7000 miners were killed.
