Two demolition contractors being sentenced in a deadly Philadelphia building collapse admit some responsibility but they also call themselves scapegoats for the people who hired them.

Prosecutors say contractor Griffin Campbell cut corners and caused a four-story brick wall to collapse on an adjacent thrift store two years ago, killing six people and injuring a dozen others.

Campbell was hired at a fraction of the going rate for the job.

Prosecutors will ask a judge Friday to sentence Campbell to 25 to 50 years in prison for involuntary manslaughter, aggravated assault and other charges. A jury cleared him of third-degree murder.

Subcontractor Sean Benscop (BEN'-skop) pleaded guilty to the involuntary manslaughter counts. He could get far less time for his trial testimony against Griffin.