Hilt alongside his blade typology. Oakeshott pommel types are enumerated with capital letters A–Z, with subtypes indicated by numerals. The grip is the handle of the sword. It was usually of wood or metal, and often covered with shagreen (untanned tough leather or shark skin). Shark skin proved to be the most durable in temperate climates but deteriorated in hot climates, and consequently rubber became popular in the latter half of the 19th century. Alternatively, many sword types opt for ray skin instead, referred to in katana construction as the "same". Whatever material covered the grip, it was usually both glued
Tanning (leather) most common source of protein). Up to 25% of the chickens in Bangladesh contained harmful levels of hexavalent chromium, adding to the national health problem load. Chromium is not solely responsible for these diseases. Methyl isothiazolinone, which is used for microbiological protection (fungal or bacterial growth), causes problems with the eyes and skin. Anthracene, which is used as a leather tanning agent, can cause problems in the kidneys and liver and is also considered a carcinogen. Formaldehyde and arsenic, which are used for leather finishing, cause health problems in the eyes, lungs, liver, kidneys, skin, and lymphatic system and are