Extracting metals and making alloys

Metals are very useful. Ores are naturally occurring rocks that contain metal or metal compounds in sufficient amounts to make it worthwhile extracting them: most everyday metals are mixtures called alloys. Methods of extracting metals The Earth's crust contains metals and metal compounds such...

Posted on 05:04 / 1 comments / Read More

Quarrying

You need to be able to evaluate some of the effects of the limestone industry. The main advantages and disadvantages of the limestone industry AdvantagesDisadvantages Limestone is a valuable natural resource, used to make things such as glass and concrete.Limestone quarries are visible from long...

Posted on 05:03 / 1 comments / Read More