The bread was baked on Saturday night and Sunday morning despite union threats and warnings of increased raids and certain prosecution by the Department of Labour and Industry.

But it is not yet known how many prosecutions will result from a triple-strength raid on bakeries by Shops and Factories Inspectors between 8 p.m. Saturday and 10 a.m. Sunday.

The raid was made on about 110 premises in the metropolitan area and surrounding country areas including Werribee and Geelong.

The first of five teams of inspectors started their shift at 8 pm working through to 4 a.m. The strains of "O Sole Mio" died abruptly as an inspector rapped on the heavy roller door of a bakery in Carlton and called: “Shops and Factories Inspector. Open up."

The door did not open up and the Inspector said the bakery would be reported for having failed to admit an Inspector.