A 26-year-old Oakland woman was crushed to death in an industrial accident last Tuesday at a San Francisco printing press — the second industrial fatality in the city in two consecutive days.

The woman, identified by the San Francisco medical examiner's office as Margarita Mojica, was caught in a printing press at Digital Pre Press International and suffered fatal head and chest trauma, said a spokeswoman for the state Department of Industrial Relations, according to newspaper reports.

The incident occurred about 11:35 a.m., said San Francisco fire Lt. Ken Smith. Firefighters extricated the woman from the machine, but she died almost instantly.

The state Division of Occupational Safety and Health is investigating the accident.

“This is the second accident where an individual was doing nothing other than doing their job being at work trying to earn a living for their families,” Smith said.

Last Monday, Luis Gonzalez, 43, was killed when an old power plant in the Hunters Point section of San Francisco collapsed on him and two other workers. The structure was being prepared for demolition.

One worker suffered a severe crushing injury on his legs; the other was crawling from the rubble when rescuers arrived.