 It diversified into pharmaceuticals in the 1970s, and since 1995 it has been a subsidiary of the German company Celesio AG.AAH originated in 1892, when Cleeves Company was formed in Wales, owning about 7,000 acres of land.It merged with two local companies, Gurnos and Gellveeidrim, to form Amalgamated Anthracite Collieries Limited.