The celebrations were attended by Tomasz Cudny, President of the JSW Management Board, and Edward Paździorko, Vice-President for Technical Matters. In front of the commemorative plaque, flowers were also laid by the leaders of "Solidarity" at JSW, trade union representatives, directors of mines and JSW plants, and numerous delegations.

The former "Manifest Lipcowy" mine was the first industrial plant where ZOMO officers used firearms against protesting miners.  On 15 December 1981, 1,700 militiamen, ZOMO and SB functionaries and solders, as well as tanks and armored vehicles were used against the protesters. Four miners were injured in the pacification. One day later, on 16 December, the "Wujek" mine in Katowice was pacified – 9 miners were killed and 23 wounded.