Industrial uses of limestone powder

Limestone is very common in architecture. Many landmarks across the world, including the Great Pyramid and its associated complex in Giza, Egypt, are made of limestone. So many buildings in Kingston, Ontario, Canada were constructed from it that it is nicknamed the 'Limestone City'. On the island of Malta, a variety of limestone called Globigerina limestone was, for a long time, the only building material available, and is still very frequently used on all types of buildings and sculptures. Limestone is readily available and relatively easy to cut into blocks or more elaborate carving. It is also long-lasting and stands up well to exposure. However, it is a very heavy material, making it impractical for tall buildings, and relatively expensive as a building material.
Examples of limestone powder industrial uses:
1) Limestone powder is the raw material for the manufacture of quicklime (calcium oxide), slaked lime (calcium hydroxide), cement and mortar.
2) Pulverized limestone is used as a soil conditioner to neutralize acidic soils.
3) It is crushed for use as aggregate—the solid base for many roads.
4) Geological formations of limestone are among the best petroleum reservoirs;
5) As a reagent in flue-gas desulfurization, it reacts with sulfur dioxide for air pollution control.
6) Glass making, in some circumstances, uses limestone powder.
7) Limestone powder is added to toothpaste, paper, plastics, paint, tiles, and other materials as both white pigment and cheap filler.
8) Limestone can suppress methane explosions in underground coal mines.
9) Limestone powder is added to bread and cereals as a source of calcium.
10) Calcium levels in livestock feed are supplemented with it, such as for poultry
11) Limestone powder can be used for rematerializing and increasing the alkalinity of purified water to prevent pipe corrosion and to restore essential nutrient levels.
12) Limestone powder is used in blast furnaces, limestone extracts iron from its ore.
13) Limestone powder is often found in medicines and cosmetics.