 Colloquially styled the 'Knez's arsenal', its first director, Charles Loubry, was a French engineer authorized to take over this duty by a significantly larger figure than the Serbian "knez"—the Emperor of France, Napoleon III.Following the creation of the VTZ, industrial development continued at an unprecedented pace.The first telephone exchange was installed in 1858, and in 1868 the first industrial brewery was opened by Nikola Mesarović.The first printing press was founded in 1870.