Fourteen people buried in a stone pit landslide in southwest China's Sichuan Province remained missing, with rescuers recovering only four vehicles' wreckage on Sunday.

About 250,000 cubic meters of rocks slid more than 20 meters down a hill behind the Shunjiang Quarry in Ledu Township, Emeishan City under Leshan City at about 1:50 p.m. Wednesday.

The buried included nine truck drivers and five other quarry workers. Twelve of them were from Emeishan while the other two were from Shizhong district of Leshan City and Meishan City, said Zhang Yili, the city's deputy mayor.

Rescuers were digging two tunnels to reach the buried, and the efforts were continuing, Zhang said.