Bulgaria's General Labour Inspectorate will present the results of the inspectorate preliminary examination on the causes of the January 10 tragedy at Bulgaria's Kremikovtzi steel maker.
Three casualties, a fireman and two workers, died and twenty two were seriously injured in a blast furnace gas leak explosion that took place in the Sofia-based steel maker.
Just a day after the gas leak at the plant another accident was reported, but no one was injured.
Later on Tuesday Bulgaria's National Council on Labour Conditions headed by Social Minister Hristina Hristova will convene on the deadly accident.