More than 500 rescuers, including armed police, militia, officials and villagers, are searching for two construction workers who went missing after a mud-rock flow hit a hydropower station in southwest China late Friday, Xinhua reported. The rainstorm-triggered mud-rock flow, which hit the power station being built in Shimian County of Ya'an City in Sichuan Province at midnight on Friday, killed 10 workers and slightly injured three others, said Du Wenjun, a press official of the Shimian County. The workers were engulfed by the mud-rock flow on their way to escape, Du said. The three injured workers are in stable condition, he said. Rainstorms and downpours have lashed 11 counties in Sichuan within hours as of early Saturday morning, with the maximum rainfall reaching 100 mm. China has suffered from abnormal and extreme weather that led to fatal floods, landslides and lingering drought in a number of provinces this year. The disasters left 1,279 people dead and 239 others missing in the first seven months, the Ministry of Civil Affairs has said.