Worker, Male Hand Opens the Furnace, Puts a Piece of Wood and Closes the Furnace For Clay and Enamel Burning, Slow Motion. Orange Flame Comes Out. Workers in Safety Clothes and Gloves Are Working at the Furnace. Show For Tourists, at Festival of High Temperatures in Wroclaw City, Poland. Preparation of the Casting Forms, Molds. Casting Workshop. Glassworks. Casting of Iron Into the Molds. Tourism in Poland, Tour to Wroclaw. Industry, Workshop Outdoors