Editing Rubber bullet (section)

==Composition and physical properties==
Analysis of the composition of the "rubber" pellets used by [[Carabineros de Chile|Chilean police]] shows that 80% of the pellets is made up of hard substances, chiefly [[silica]] and [[barium sulfate]], while rubber makes up 20%. The measured hardness of the "rubber" pellets is 96.5 [[Shore durometer|shore A]].<ref name=UChile>{{Cite news|title=Investigación U. de Chile comprueba que perdigones usados por Carabineros contienen solo 20 por ciento de goma|url=https://www.uchile.cl/noticias/159315/perdigones-usados-por-carabineros-contienen-solo-20-por-ciento-de-goma|date=November 18, 2019|access-date=June 29, 2020|language=es|work=Universidad de Chile}}</ref> The hardness of the pellets explain why "exploded eyes" were [[Eye injuries in the 2019–2020 Chilean protests|so common in the 2019–2020 Chilean protests]].<ref name=UChile/>