Industry

High-speed Steel

metallurgy

Rivet

building technology

Dynamite

Inventor, & Facts

Smelting

Definition & Facts

Pin Fastener

machine component

Karat

gold measurement

Solar Tracker

Definition & Facts

Spelter

metallurgy

Sander

tool

Soap

Chemistry, Uses, Properties, & Facts

Aeolipile

steam turbine

Cupola Furnace

metallurgy

Burgess, Hugh

American inventor

Lost-wax Process

metal casting

Spinning

metalwork

Trans-Arabian Pipeline

pipeline, Asia