| http://www.w3.org/ns/prov#value | - Also certain anthracite coals, coke and semi-coke are especially satisfactory in addition to other carbonaceous Or carbonizable raw materials, such as wood, charcoal, peat, cork, pitch, tar, sugar, dextrine, certain organic acids and their salts, fats and fatty acids, thickened sulfite waste liquors, soaps and mixtures of these materials.
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