Commemorative plaque to Mr. Sámuel Mikoviny (Mikovini) (1698–1750) Slovak nationality Hungarian mathematician, engineer, surveyor and professor, founder of the mapping in Hungary. It is affixed to the wall of the former Mining Research Institute (now ExVÁ Testing Station for Explosion Proof Equipment Ltd.) in the street that bears the name of the scientist. (Budapest, District III, Mikoviny Street Nr 2-4)