Djordje vajfert je bio

On his return to Belgrade, he noticed that one of the biggest problems for his father’s brewery  was a dependence on expensive coal which the brewery  used in large quantities.

He started to search around Serbia, which is rich in coal sediments, for a place profitable for exploitation. After just one year, in , he was given a  concession to a coal mine in Kostolac, in Eastern Serbia  on the river Danube.

See full list on sr.wikipedia.org

This was a great success: the mine was rich and he was able to transport the coal in barges up the Danube. This 'beginner's luck’ stirred  in him a passion for mining, that remained with  him throughout his life, and mining became his main occupation.

In the following years he opened up numerous mines^[10]  in Serbia , but they largely proved to be financial disasters.

By , most of his business partners and investors had left him, and he had accumulated debts  that neither his mine in Kostolac nor his father’s brewery c