How is Limestone quarried? | Yahoo Answers
21/08/2011 · From these proposals, we can see that how to quarry limestone. First, make limestone crushed by crushing equipment and screen out the right size crushed limestone. Second, if we need silica powder, we need silica grinding machine.Quarry - Wikipedia,A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The word quarry can also include the underground quarrying for stone, such as Bath stone .How does cement set? Don't say "Just add water!"? |,25/01/2009 · Limestone is taken from a quarry. It is the major ingredient needed for making cement. Smaller quantities of sand and clay are also needed. Limestone, sand and clay contain the four essential elements required to make cement. The four essential elements are calcium, silicon, aluminum and iron.