Decree amending Decree No. 22 / 1989 Coll., on the safety and health at work and safety of operations in mining and mining activities, and on mining and mining activities, as amended, Decree No. 392 / 2003 Coll., on the safety of the operation of technical equipment and on requirements for dedicated technical equipment in mining and mining activities, and Decree No. 659 / 2004 Coll., on the safety and health of operations at work and the safety of operations in mines with the dangers of mining shocks