Hanna, Donald & Wilson

The international character of the company especially applied to the construction of gasworks. For the Continental Union Gas Company Hanna built gas works in 13 cities, mainly in Italy. For the European Gas Company Hanna built in Le Havre, Rouen and Caen. For the Malta and Mediterranean Gas company in Valetta, Trapani, Corfu and Marsala. Hanna was also involved or built gasworks in Amsterdam, Bucharest, Kharkiv, Brisbane and Melbourne.

In Britain the company did work for the Crystal Palace Gas Works Company, the Royal Arsenal at Woolwich, the Military College at Sandhurst, and some 50–60 other towns in the United Kingdom. In Scotland itself Hanna, Donald & Wilson was involved in Glasgow, Paisley, Greenock, Aberdeen, Edinburgh and Leith. For the Glasgow Gas Works Hanna built four gas holders of a capacity of 1,250,000 cubic feet (35,000 m3) of gas.

The Gasholder in its home town Paisley was also built by Hanna, and completed in 1890. The tank was built by James Goldie and Son of Glasgow. It had a 1,390,000 ft3 (39,000 m3) capacity, and is held by 18 cast iron columns 75 feet 6 inches (23.01 m) in height and 5 ft 0 in (1.52 m) at the base. The structure is now a listed building Paisley, Well Street, Gasholder. This was not the first gasometer in Paisley, because in 1853, the company had also opened such a work.