Above is very old way of making glass; this is most likely a specialty glass factory. 

A modern glass factory is nearly totally automated and no one is pouring hot glass everywhere:

Reddit comments:

http://reddit.com/r/videos/comments/2mvzgw/making_sheet_glass_mesmerizingly_dangerous/

Top Reddit comment:  It seems like they should probably put the rolling mechanism closer to the furnace so you don't have a dude that looks like the mountain from GOT running around with a giant spoon of molten glass like he's playing the devil in lacrosse for his soul, Charlie Daniels style, or something.

Haha, that's a vivid image. He's right though.

The plate glass video above is much more like how we should do it in civilized society.