In the mid-1980s, HVO launched the Big Island Map Project (BIMP) to update the geologic map of the island of Hawai'i. Its major publication is the 1996 Geologic Map of the Island of Hawai'i (1996) by E.W. Wolfe and Jean Morris, digitized in 2005. Leadership HVO Directors 1912 to 1940, Thomas A. Jaggar, Jr. (1871–1953) 1940 to 1951, Ruy H. Finch 1951 to 1955, Gordon A. Macdonald (1911–1978) 1956 to 1958, Jerry P. Eaton HVO Scientists-in-Charge 1958 to 1960, Kiguma J. Murata 1960 to 1961, Jerry P. Eaton 1961 to 1962, Donald H. Richter 1962 to 1963, James G. Moore 1964 to 1970, Howard A. Powers 1970 to 1975, Donald W. Peterson 1975 to 1976, Robert I. Tilling 1976 to 1978, Gordon P. Eaton 1978 to 1979, Donald W. Peterson 1979 to 1984, Robert W. Decker (1927–2005) 1984 to 1991, Thomas L. Wright 1991 to 1996, David A. Clague 1996 to 1997, Margaret T. Mangan 1997 to 2004, Donald A. Swanson 2004 to 2015, James P. Kauahikaua 2015 to 2020, Christina A. Neal 2021 to present, Ken Hon Operations The Hawaiian Volcano Observatory hosts a large monitoring network, with over 100 remote stations transmitting data 24 hours a day. This information is provided immediately over the Internet, as is live coverage of ongoing eruptions from several webcams accessible from the Hawaiian Volcano Observatory website (see External links). Another important function of HVO is to monitor the sulphur emissions that produce the volcanic pollution condition known as vog. The observatory advises the park service when to close areas due to this and other volcanic hazards. While the main Observatory building itself was not open to the public, the adjacent Thomas A. Jaggar Museum included interpretive exhibits on the work performed at the observatory. The exhibits ranged from general information on volcanoes and lava to the scientific equipment and clothing used by volcanologists. Some of the museum's windows provided a sheltered view of Halemaʻumaʻu and the Kīlauea Caldera. A public observation deck at the museum, overlooking Kīlauea and formerly open 24 hours a day, provided views of the area. On May 10, 2018, Hawaii Volcanoes National Park was closed to the public in the Kīlauea volcano summit area, including the visitor center and park headquarters, due to explosions, earthquakes and toxic ash clouds from Halemaʻumaʻu. While much of the park was reopened on September 22, 2018, the former Observatory building and Jaggar