results in the formulation of geologic principles." Van Hise was also an early champion of conservation of natural resources. Other notable scientists worked in the building, but it was particularly for the association with Van Hise's work on geology that Science Hall was named a National Historic Landmark in 1994. Radio Hall (1887) Just up the hill from Science Hall, the low-slung building with the big chimney was built in 1887 to house the university's central heating plant. After the first Science Hall burned in 1884, the university's planners decided to split some fire-prone functions out of the new Science Hall into separate buildings. They moved the forges which were suspect in the 1884 fire to machine shops where Helen White sits today, and they moved the furnaces to this building. It generated steam, which was piped through tunnels to the new Science Hall, and later to the 1892 law building and other buildings. The heating plant was designed by H.C. Koch, who also designed both Science Halls. He covered it in cut stone, with segmental arches over many openings, and one chimney. In the 1890s it was extended 70 feet to the south with a second chimney. The university continued to grow, and in 1908 built a new central heating plant south of University Ave. With the old heating plant free, the new Mining Engineering department moved in, remodeling the building to make assaying labs and ore dressing rooms. Mining stayed in the building until about 1931. The building is now called Radio Hall because the university's pioneering radio station WHA moved in from Sterling Hall in 1934 and operated here until 1972, when it moved to Vilas Hall. Again the building was remodeled, with labor provided by the New Deal Civil Works Administration and the Federal Emergency Relief Administration. As part of the remodel, they built an interior room mounted on springs to reduce vibrations while recording. Funded by the National Youth Administration, WHA hired students to decorate the lobby with art showing old means of communication: the copies of petroglyphs from around Wisconsin, the carved Indian drums in the light fixtures by John Gallagher, and the mural showing the early days of radio at Madison by John Stella. Around the same time, Professor McCarty asked Frank Lloyd Wright for advice on remodeling the outside of the building, but after a pause Wright replied, "Don't touch it, my