Ground Glass

A physical “poison.” The sharp edges of the glass inflict numerous cuts on the digestive tracts, leading to internal bleeding and, if that doesn’t kill the victim, to a risk of infection. The immediate effect of ground glass in the digestive system is 1d of impaling damage to the vital organs (see p. B399). Armor does not help. After this, apply the optional Bleeding rule (see p. B420), even if it’s not used for ordinary injuries. If this doesn’t kill the victim, roll against HT-1 to avoid infection in the abdomen (see p. B444). LC4.

Source: GURPS 4th - Mysteries, page 37