[30] Pumice in powdered type was an component in toothpastes in historic Rome.[31] Nail care was very important in historic China; nails had been kept groomed with pumice stones, and pumice stones were also applied to eliminate calluses. The largest volcanic eruptions can eject quite a few cubic kilometers of https://dailybookmarkhit.com/story19483285/pumice-stone-suppliers-no-further-a-mystery