Helmhacker, Rudolf V. M.Sc., Prof.
born 15th November 1840, Rokycany, died 24th May 1915, Prague
Geologist and mining engineer. He completed his education in 1857 - 1863 at the Polytechnic College in Prague, the Prague University, the Polytechnic College in Vienna, and at the Mining Academy in Příbram. When he finished his studies he was mining engineer in the years 1863 - 1872 working at many places (for example, Zbýšov u Brna, Nučice, Kladno and Ostrava). In 1875, he was assigned to a post of professor of mineralogy, geology and paleontology at the Mining Academy in Leoben (now Styria)where he worked till 1883. In 1883, he left for Russia and Siberia, where he searched for gold deposits in the Altai Mountains and the Urals. When the World War One broke out in 1914, he stayed in France where he was imprisoned. At the beginning of 1915 he returned to Prague and soon after he died. His scientific work is diverse dealing with almost all disciplines of earth sciences. It comprises papers on mineralogy, petrography, geology, mineral deposits and mining engineering. He investigated paleontology of the Rosice-Oslavany coal field. He described an organic mineral válaite (named after J. Vála but later discredited) from Zastávka and Zbýšov u Brna, whose composition is close to asphalt. He is the author of very accurate geological maps of the Czech Lands.
Works of this author on the medium
- Synoptic geognostic map of the Rosice-Oslavany bituminous coal unit, (1866)
 - Synoptic geognostic map of the Rosice-Oslavany bituminous coal unit, , (1866)
 - [Geognostic map of the landscape near to Vranov, Přestavlk and Soběhrad to the north of Benešov], , (1871)
 - [Geognostic map of the landscape in the region of Vranov, Přestavlk and Soběhrad to the north of Benešov], [Longitudinal cross-sections, profiles] – Tab. II, (1871)
 - Geognostic description of a part of the landscape between Benešov and Sázava, , (1871)
 - Geognostic description of the part of the land between Benešov and Sázava, (1871)
 - [Geognostic map of the landscape in the region of Vranov, Přestavlk and Soběhrad to the north of Benešov], (1871)
 - Map of soil conditions of the area near Vranov, Přestavlky and Soběhrady north of Benešov, (1871)
 - A map of the environs of Svárov and Nučice between Prague and Beroun, , (1877)
 - A map of the environs of Svárov and Nučice between Prague and Beroun, Geological cross-sections., (1877)
 - A map of the environs of Svárov and Nučice between Prague and Beroun, Geological cross-sections., (1877)
 - A map of the environs of Svárov and Nučice between Prague and Beroun, View of the opencast mine in Nučice (vineyard), (1877)
 - [Map of the environs of Svárov and Nučice between Prague and Beroun], (1877)
 - [Map of the environs of Svárov and Nučice between Prague and Beroun], Rudní lom u Nučic č. II, (1877)
 - [Map of the environs of Svárov and Nučice between Prague and Beroun], Pohled na lom rudní v Nučicích (vinice), (1877)
 - [Map of the environs of Svárov and Nučice between Prague and Beroun], [Průřezy … ], (1877)
 - [Map of the environs of Svárov and Nučice between Prague and Beroun], [Průřez zeměznalecký … ], (1877)
 - [Map of the environs of Svárov and Nučice between Prague and Beroun], [Průřez zeměznalecký … ], (1877)
 - Map of the environs of Svárov and Nučice between Prague and Beroun, (1877)
 - A map of the environs of Svárov and Nučice between Prague and Beroun, Geological cross-sections., (1877)
 - Iron ores in the area between Prague and Beroun, , (1877)
 - A map of the environs of Svárov and Nučice between Prague and Beroun, Geological cross-sections., (1877)
 - A map of the environs of Svárov and Nučice between Prague and Beroun, Opencast mine near Nučice No.II , (1877)
 - [Geological map of the environs of the city of Prague], [Geological cross-sections], (1879)
 - Explanations to geological map of the Prague environs, (1879)
 - Geological map of the environs of the city of Prague, , (1880)
 - Explanatory notes to geological map of the environs of Prague, , (1885)
 - Explanatory notes to geological map of Železné hory Mountains and neighbour districts in eastern Bohemia, The first part. Description of general geology of Železné hory Mountains, (1891)
 - Geological map of Železné hory Mountains and adjacent areas in eastern Bohemia, , (1891)
 - Explanatory notes to Geological map of Železné hory Mountains and adjacent areas in eastern Bohemia, (1892)
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