The Lincoln-based quarry operator has been so impressed by the Arocs' suitability and fuel performance, beating other vehicles "by a clear margin", that it has already ordered five more.
Supplied by dealer Intercounty Truck & Van, the 32-tonne Arocs 3240s are powered by 394bhp straight-six engines, driving through PowerShift automated transmissions, and are fitted with steel Thompsons bodies.
Recommendations from other operators and the chance to test a demonstrator convinced GS Hughes' transport manager John Barker that the Arocs would fit the bill.
"The ride height and the way that damage-prone items are positioned out of harm's way help to make this a vehicle that is completely at home in quarries and on construction sites," he says.
He adds: "Our new Arocs are already living up to their promise and performing very well, with fuel efficiency another pleasing factor.
"Our work is so varied that comparing one vehicle against another is quite meaningless, but these Mercedes-Benz trucks are clearly more economical than our other trucks, and by a clear margin."