References in classic literature ?
Wery well, thank 'ee, Sir," says my father; "I hope you're pretty middlin," says he.
Mount Isa Mines (MIM) itself offers very popular surface and underground tours to visitors, and two other tourism centres, the John Middlin Mining Display and Visitor's Centre and the Frank Aston Underground Museum, display mining equipment, technology and processes.
The most popular is the John Middlin Visitors Centre and Mining Display, which was originally operated by Mount Isa Mines but is now run by the Museum of North West Queensland.