Authorities rescued a man Thursday who became trapped for two hours in a huge mixer full of dry cement in the San Francisco Bay Area

Firefighters in Alameda County were called to U.S. Pipe and Foundry in Union City, east of San Francisco, at about 4:30 p.m.

A worker told KTVU-TV that a 27-year-old supervisor was looking into the two-story industrial hopper when he lost his balance and fell. He was stuck up to his waist in dry cement.

County fire officials say they secured the man with a harness to prevent him from sinking deeper and drained the cement from the bottom of the hopper.

The man was given oxygen and finally pulled up at around 6:30 p.m.

There's no word on his condition but he managed to stand and walk before he was taken to an ambulance.