Building under construction in oakland. Leaves up to 20 workers trapped in wet cement. vicki the accident was just after nine30 this morning. On hawthorne avenue near broadway. grant thats where we find kron fours Philippe Djegal. Who arrived on scene shortly after the initial emergency call. Philippe. Thats right. And, a witness tells us this could have been a whole lot worse if the wet cement was any deeper. No one died. But a dozen people were taken to hospitals. philippe calm one moment seconds later a loud thud. Saul duran witness i was afraid that someone was buried inside, you know. A witness who shot this video of the aftermath shows construction workers huddled near the front entrance of what oakland fire battalion chief Ian Yan Mcwhorter says is an apartment parking garage under contruction. This is where the accident happened Fire Fighters snapped photos of what they saw. Ian mcwhorter battalion chief they were only trapped up to their knees. He says by the time the Oakland