The workers were rescued from Ying'erling tunnel in Laiyuan County, Hebei Province last night, and are in a good condition, the state-run Xinhua news agency reported today.
One side of the tunnel collapsed last Saturday and the debris blocked the exit, trapping the workers inside.
Rescuers managed to contact them through a channel next morning and confirmed that they were safe.
Food and drinking water were then sent to them via the channel, the report said.