The iron filings are attracted to the magnet, but the sand is not. A mixture of iron filings and sulfur powder could be separated in exactly the same way. A beaker containing a mixture of ...

Over three days and three nights, smelters using ancient techniques shovel roughly 25 tons of iron-bearing river sand and charcoal ... of clay and charcoal powder onto the blade's upper sides ...

Q: I’m slowly building the industries on my HO layout and can’t seem to find one in particular: a glass plant. I see all types of industries one can buy in HO scale, but no one seems to make a glass ...