15:16

Acetylene Gas from Sea Shells and Driftwood

7:38

Passion for Cemented Carbide - From the ore to the finished product

5:09

Chloro alkali

28:32

BUNA-Werke Carbid Fabrik

4:35

What is Cemented Tungsten Carbide?

12:08

Auto Lite Calcium Carbide Miner's Lamp

14:40

Ces Machines CHOQUANTES Te laisserons SANS VOIX

22:29

Gold Mining