US regulators have fined a Pennsylvania factory after two workers fell into a vat of chocolate and had to be rescued, says the BBC’s Max Matza.

Fined US$14,500

The Mars Wrigley factory in the city of Elizabethtown was fined more than US$14,500 by the Occupational Safety and Health Administration.

Mars and Wrigley – both American confectioners that are each over a century old – merged in 2008.

In addition to Dove, the company produces several popular sweets such as M&Ms, Snickers and Twix.

The workers were contractors who did not work full-time for the factory.

Hole cut into vat bottom

The incident happened in June last year. A hole had to be cut into the bottom of the partly-full tank to get them out.

More than two dozen rescuers responded, and one worker was transported to hospital by helicopter, according to local reports.

The regulator’s report labelled the incident “serious”. It says the workers were hired to clean tanks, and were not provided with proper safety training.

It noted that the workers fell into a batching tank – a tank used to mix ingredients – for Dove chocolate, a brand sold in the US. In the UK and elsewhere, Dove is sold as Galaxy.