марин карбури (1729 - 1782)
Marin Carburi of Ceffalonie was a Greek military engineer from Kefalonia.
Carburi studied mathematics at the University of Bologna, but later had to flee and became an officer in Catherine the Great's Russian army. He became famous for being able to transport the infamous Grom Stone from the Gulf of Finland to St. Petersburg to serve as a pedestal for the equestrian statue of Peter the Great.
The history of this engineering feat is quite remarkable. The French architect Falcone, who was commissioned to create a monument to Peter the Great, decided that traditional pedestals for equestrian statues were too banal for this project, and decided that only a massive rock would do. After a long search for a suitable rock, a peasant informed the commission created for this purpose that he had found a huge rock measuring forty by twenty-seven by twenty-one feet in a swamp near the Gulf of Finland. After the majority of engineers recognized its movement impossible, Catherine II commissioned Carburi to do it, with which he brilliantly coped. In fact, the military engineer became the inventor of ball bearings, creating a giant sled based on them. He wrote a detailed treatise about it, published in Paris in 1777.
Back home in Kefalonia, Carburi took up farming, but in 1782 he was murdered by his workers.
