Installation Of Two-Way Switches For The Transportation Of Coal Powder Along The Route Of The Coal Pipeline At The +27 Line No. 5 Of The Roasting Shop-2 Of The Coal Preparation Section/Installation Of Two-Way Switches For The Transportation Of Coal Powder Along The Route Of The Coal Pipeline At The +27 Lvl Of Line No. 5 Of The Calcining-2 Shop Of The Coal Preparation Site (Cement)