From the paper you linked to:<p>&quot;Mummy semi-solid material is extracted from seams in caves and contains a composition of hydrocarbons, oxygen, nitrogen and sulphur. These materials are used as wound dressings... Some researchers combine known materials, such as bitumen chemical and spectral analysis, to indicate the presence of hydrocarbons. Two types of mummy: fat-soluble and organic materials, such as alcohol chloroform (localised type) and water soluble (type of food), have been characterised.&quot;<p>I may have misunderstood something, but I don&#x27;t think the &quot;mummy&quot; of the paper is the same thing as the &quot;mummies&quot; of the post to which HN links.