1890s. The population had declined, and the economy was in recession. The early 20th century saw a shift in economic emphasis away from the traditional agricultural primary industries towards industrialisation. Henry Jones' waterfront factory had outgrown its requirements by 1911 as demand continued to grow, and Henry Jones IXL built a grand new factory on the eastern side of Constitution Dock, which was the first reinforced concrete building in Australia. In what was a pre-war period of development, several new buildings were added to the Hobart skyline in the early 20th century. In 1911, the grand new Hobart City Hall was opened, which had been designed by competition winner R. N. Butler. A new Customs House, built in classical revival style, was opened in 1902 adjoining the original 1815 Bond Store. The iconic grand sandstone Hobart General Post office with classical clock-tower, designed by architect Alan Walker in High Victorian style, and built through funds donated by the people of Hobart in celebration of Australian Federation, opened on 2 September 1905. A telephone exchange was added in 1907. On 7 March 1912, Roald Amundsen telegraphed from the Hobart GPO that he had successfully reached the South Pole the previous December. Although many bushfires had burned around the Hobart region since settlement, Hobart's relatively small size had meant few had caused serious damage. That changed in the summer of 1913–14, when several small bushfires burned on the slopes of Mount Wellington, and destroyed orchards, several buildings and livestock. With the economy lagging, the Premier Walter Lee toured pre-war Germany, whose economy was booming. He was inspired by the hydroelectricity schemes of the Ruhr Valley, and realised the same method of cheap electricity production could benefit Tasmania with its mountainous interior. In 1914, the state government established the Hydro-Electric Department (later Hydro-Electric Commission) to provide cheap electricity in the hope of attracting industry to the island. Upriver from the city key industries were established including the Pasminco Electrolytic Zinc Company, Cadbury's Chocolate Factory (1920) and the Boyer Newsprint Mills, and since the early 20th century the cheap ready supply of hydro-electric power has meant Hobart has been able to maintain a small industrial base. It has never attracted the heavy industry so desired by the state's politicians, which meant that Hobart has remained the least industrialised of all of the Australian capital cities. The Cadbury Chocolate Factory project mirrored the company's Quaker