Classifier Instance:

Anchor text: Broken Hill, New South Wales
Target Entity: Broken_Hill\u002c_New_South_Wales
Preceding Context: In August–September 1905, he founded the Zinc Corporation (later, following various mergers, to become part of the Rio Tinto Group) with William Baillieu and others, with the intention to purchase and treat the zinc rich-tailings in
Succeeding Context: . Known as "the Sulphide Problem", it had been noticed that considerable zinc in the lead-silver could not be recovered and was lost as tailings. Initially, Broken Hill mining companies mostly extracted the silver by crushing and gravitation methods by the turn of the century. Hydro-metallurgical, and magnetic separation methods were also tried, but the main breakthrough came in 1902 when Delprat and Potter independently devised processes that would eventually be patented as the Delprat-Potter method. This was a part of the overall effort being made in Broken Hill to devise a practical and profitable method to use the newly developed froth flotation process to treat these tailings and recover the zinc. Flotation, an important mineral separation process, was pioneered in Broken Hill and numerous efforts were being made in various locations around the world to refine this process. The Delprat-Potter process became the main method used in various companies in Broken Hill, although the Zinc Corporation struggled to gain success using this process. During Hoover's 1907 visit to Australia, Jim Lyster relocated from Gwalia to Broken Hill and began experiments which resulted in the "Lyster Process", which enabled the Zinc Corporation to operate the world's first selective or differential flotation plant, from September 1912. Lyster signed US patents in 1916 and 1921, securing the international rights to these developments for a UK based company, Minerals Separation, Limited. Working with his brother, Theodore J. Hoover, Minerals Separation Ltd and his own company, Hoover was supplying the world's industries, such as steel, with zinc and other vital base minerals.
Paragraph Title: null
Source Page: Herbert Hoover

Ground Truth Types:

Predicted Types:

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