1.   Cal-OSHA inspectors blamed the contractor for failing to safely cover the shaft.

2.   City officials blamed the contractor, Target Construction, for the delays.

3.   He blamed defense contractors who lobby for costly weapons systems that do not work.

4.   If you take the latter course, you will probably blame the contractor for any shortcomings.

5.   They blamed contractors who did not have access to the list of approved addresses.