Osek u Duchcova - monument to the victims of the disaster at the Nelson III mine.

The Nelson brown coal mine in Osek on Teplick was built in 1876 by an English mining company founded by William Refeen. In 1883, they established a third mining pit in the mine, which they named Nelson III. Despite the fact that the Nelson mine was never previously considered dangerous, one of the biggest mining tragedies in Czechoslovakia at the time occurred here. The tragedy happened on the 3rd…