copper

He fumbled in his pocket and brought out some coppers.

I had in my pocket a handful of copper money.

Most of Africa presents a curious case in which societies moved directly from a technology of stone to iron without passing through the intermediate stage of copper or bronze metallurgy, although some early copper-working sites have been found in West Africa.

Iron casts better than copper.

I had in my pocket a handful of copper money.

And many of the sound effects he pioneered are still in use today, like creating thunder by pulling on one of the corners of a thin copper sheet.

He layered pieces of glass and used thin copper strips instead of lead, which let him make these really intricate flowery designs for stained-glass, which he used in lamp shades.

This was finally achieved by Louis Daguerre (1787-, who perfected a way of fixing them on a silvered copper plate.

So it was really that one step in the process of producing copper…the problems just built up and up until there was a desert where a beautiful forest used to be.

Well, in the process, large vats of raw copper ore are burned slowly, for two or three months actually, to lower the sulfur content.

And heap roasting was a way to burn away the sulfur in the copper, so they’d be left with something closer to pure copper.

Copper ore contains sulfur.

They perhaps felt they could put extra pressure on me because, as a copper, I didn't need the careful handling we give other victims.

He could see the bright gleam of the boat's newly coppered hull.

Those copper articles were superficially brassed.