Born Apr. 13, 1833, in Siri-u-Zbirova; died July 15, 1921, in Pribram. Czech mining engineer.
Hrabák graduated in 1854 from the mining academy in Banská Stiavnica, where he became a professor in 1871. His most important works are dedicated to the construction and design of steam engines for the mining and metallurgical industries. He is the author of works on the history of mining and metallurgy in Bohemia.