RALEIGH, N.C. (AP) _ The North Carolina Department of Health and Human Services says the director of its business training program for the blind has resigned as a state audit reported that ineffective oversight meant it was impossible to tell what worked.

State Auditor Beth Wood’s office reported Thursday that the Business Enterprise Program for the blind has spent $29 million since 2000. The money comes from federal funds coupled with 17 percent of the revenues generated by each food service and vending location.

The human services agency says its program to train the blind to operate snack bars in state and federal buildings has not had any goals or performance yardsticks since it started in 1978.

There are 89 facilities statewide run by 70 operators who generate sales of nearly $11 million annually.