What has limestone ever done for us?

It is strange that in an article condemning the so called “destructive impact of concrete”, the Guardian choses to illustrate it with the image of a limestone quarry rather than a cement factory or a concrete plant.

Is it because the modern production facilities do not present the negative image they are looking for?

Hope cement works

I mean apart from being a key ingredient in cement and the building blocks of many outstanding structures, why do we create this dust and scar the landscape?

According to the great (but not infallible) source, Wikipedia, limestone also has the following uses:

  • It is the raw material for the manufacture of quicklime (calcium oxide) and slaked lime (calcium hydroxide).
  • Pulverized limestone is used as a soil conditioner to neutralize acidic soils (agricultural lime).
  • It is the raw material for the manufacture of quicklime (calcium oxide) and slaked lime (calcium hydroxide).
  • Pulverized limestone is used as a soil conditioner to neutralize acidic soils (agricultural lime).
  • As a reagent in flue-gas desulfurization (it reacts with sulfur dioxide for air pollution control).
  • Glass making, in some circumstances, uses limestone.
  • It is added to toothpaste, paper, plastics, paint, tiles, and other materials as both white pigment and a cheap filler.
  • It can suppress methane explosions in underground coal mines.
  • Purified, it is added to bread and cereals as a source of calcium.
  • Calcium levels in livestock feed are supplemented with it
  • It can be used for remineralizing and increasing the alkalinity of purified water to prevent pipe corrosion and to restore essential nutrient levels.
  • Used in blast furnaces, limestone binds with silica and other impurities to remove them from the iron.
  • It is used in sculptures because of its suitability for carving.

I am sure you could come up with a lot more.

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