József Károly Hell (15 May 1713, Szélakna – 11 March 1789, Selmecbánya was a Hungarian mining engineer and inventor, who invented the water-pillar in 1749. It is mainly used today for oil extraction. He also proposed construction of the tajchy reservoirs around Selmecbánya. He was a student of Sámuel Mikoviny in 1737. Regardless of his nationality, he is a pride of both Hungarian and Slovak nations.
- Occupation
- miner, inventor, engineer
- Citizenship
- Hungary
- Born
- May 15, 1713
- Died
- March 11, 1789
