MARTINEZ (CBS SF) — A woman killed when she was crushed by a toppling gravel load in Martinez on Monday afternoon has been identified as a 32-year-old mother who was pregnant with her second child.

Lindsey Combs died when a gravel truck overturned onto her car near the corner of Shell Avenue and Pine Street just after 1 p.m. Monday, according to the Contra Costa County coroner’s office.

Combs’ four-year-old daughter was home and ran outside to find her mother crushed to death in her driveway.

Martinez police told investigators with the state Division of Occupational Safety and Health that someone working with JJR Construction had asked Combs to move her car.

When she got into the car to move it, the load of a truck filled with gravel toppled onto it, crushing her inside the car, according to the initial reports to Cal/OSHA.

Cal/OSHA investigators responded to look into the circumstances of the accident. JJR Construction was cited only once by the agency in the last five years, for a minor violation in 2010.

Martinez police have not returned calls for further information about the incident.

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