Assembly Line

What are light switches made of?

Light switches take brass, copper, silver, steel wire, plastic and screw directly. Trace them back and you pass 30 made things on the way to 19 raw materials.

How light switches are made See it on the map

What goes straight in

From the ground: 19 raw materials

Made along the way: 24 things

Metals 11

Chemicals and fuels 12

Electronics 1

What it is packed in

On the line, but left out of everything above, because it holds the finished thing rather than goes into it.