Fantastic episode about metals through the times, since after stone age when the first civilization around 4 thousand years B.C. at Mesopotamia by Sumerian people were he first ones to handling with copper and later brass more stronger, quickly nearby civilization began handling iron in a forge with air press by blowpipe and coat to reach high temperature to melt down the iron, until the 17th century with the industrial revolution with mass production and later discovering more kinds and mix them to find for several rare steels and became valuable asset to indrustry nowadays.
resume:
First watch: 2013 / How many: 2 / Source: DVD / Rating: 7
resume:
First watch: 2013 / How many: 2 / Source: DVD / Rating: 7
