Don Valley Engineering Holdings has had a good year after turning a £349,000 loss in its last accounts into £1.36m profit this time.
The Kirk Sandall company, which employs 62, was a finalist in the Doncaster Business Awards last year in the excellence in overseas trade category.
And in June it proudly delivered an enormous rock sorting machine - believed to be the biggest of its kind ever built in the UK - on time and on budget to a quarry in Devon.
The 32-tonne screen was so large it needed a police escort.
Jeff Buxton of DVE said it “pushed the envelope” of technology due to its design, size and weight, the giant sorter can handle more than 1,200 tonnes of rock an hour. It was part of a £1.2m order for 10 screens which will be used in the extraction of tungsten and tin.
He said then: “We are very proud of what we have achieved. We successfully won the order, executed the manufacture of a difficult project and delivered it on time.
“It is very good for our reputation in the industry. Our order book is full and the future is bright.”
The contract had employed 20 people for the best part of a year, he added.
The company was established in 1947 to cater for the rapidly expanding newly nationalised industries. Today the firm has a particular focus on processing and handling bulk materials and building specialist screening, centrifuging and maltings equipment serving many of the major producers and users of minerals, iron and steel, coal, sugar and potash.