In the 1851 census the manager of the gasworks was Thomas Morgan. In 1881 and 1891 Andrew Lane was the manager of the gasworks, Mr. Andrew Lane came to Hay in 1865 to take over the management of the Hay Gas and Coke Works, and he held the position of manager for 38 years. In 1911 John Gibbon was the manager of the gasworks, Mr John Gibbon, was manager of the Hay Gas Works for a number of years, he left Hay to take up a more remunerative position at Ebbw Vale in 1917. Mr Gibbon came to Hay in succession, to the late Mr Lane. Vested in the Wales Gas Board from the Hay Gas and Coke Company. In 1952 the “Gas World Year Book”, recorded that Hay on Wye was manufacturing 8 m cu.ft. of gas using horizontal retort plant. A. E. Breeze was the engineer and manager. By Nationalisation the gasworks consisted of Two small gasholders and a single retort house, with three other lean-to brick-built sheds as well as the manager’s house. The gasworks were visible on the 1887 to 1964 OS maps.