Liquid nitrogen evaporates, and can cause violent oxidation of organic material. Ingestion of liquid nitrogen can cause severe internal damage, due to freezing of the tissues which come in contact with it and to the volume of gaseous nitrogen evolved as the liquid is warmed by body heat. In 1997, a physics student demonstrating the Leidenfrost effect by holding liquid nitrogen in his mouth accidentally swallowed the substance, resulting in near-fatal injuries. This was apparently the first case in medical literature of liquid nitrogen ingestion. In 2012, a young woman in England had her stomach removed after ingesting a cocktail made with
HB Ice Cream adverts were used for Wall's in England, Miko in France and other sister brands. On 26 April 2017 many of the adverts from the 1960s and 1970s were made available to the Irish Film Archives. HB Ice Cream HB Ice Cream (originally an acronym for both Hughes Brothers and Hazelbrook Farm) is an ice cream brand in Ireland and is part of the Unilever Group's Heartbrand ice cream brand. It manufactures most of the Heartbrand's ice cream range, as well as some products designed exclusively for the Irish market, including the Hazelbrook Farm range of blocks of ice-cream. In Northern