Ingvar Birgir Friðleifsson 1946; Guðmundur Ingi Haraldsson 1951; Lúðvík S. Georgsson 1949; Einar Gunnlaugsson 1949; Björn Jóhann Björnsson 1949; Orkustofnun. Jarðhitadeild(Orkustofnun, 1980)
Guðmundur Pálmason 1928-2004; Gunnar V. Johnsen 1949; Helgi Torfason 1949; Kristján Sæmundsson 1936; Karl Ragnars 1941; Guðmundur Ingi Haraldsson 1951; Gísli Karel Halldórsson 1950; Orkustofnun. Jarðhitadeild(Orkustofnun, 1985)