 Complete the following phrase:  Outgrowing available space at its buildings in town, the museums headquarters were moved in 1973 to the former Kimberley Sanatorium built in 1897, which at one time served also as the Hotel Belgrave 19081933 and as the Holy Family Convent School, Kimberley 19331971. The new museum headquarters were officially opened on 22 November 1976. For the duration of the 