This document contains tables listing the calorific values of various biomass, fossil, and other fuels. Biomass fuels like wood and bagasse have calorific values ranging from 1500-4400 Kcal/kg, while fossil fuels like coal and natural gas range from 4000-10800 Kcal/kg. A second table provides the ash percentage and heat of combustion for various biomass materials used to make briquettes, such as rice husk, bark, and straw, which have heat values between 3800-4826 Kcal. The document appears to be from an Indian engineering company providing information on biomass and fossil fuel properties.