As the railway construction boom began in Austria-Hungary the factory had a rapid growth. Ganz bought a new ground, built a new foundry and a big boilerhouse. In 1865 Ganz left him to lead parts of the businesses. In 1867 the company had already five departments: foundry, machine factory and the workshops of the locksmiths, smith and the sample table. At that time the number of employees rose to 370. The achieved results reflected the success of the factory, at the World's Fairs in London in 1862 and in Paris in 1867 the company was awarded with silver medals.