Toronto-based SOPerior Fertilizer Corp.  has announced plans to build an alunite pilot plant facility at the site of an existing copper processing operation near Milford in Beaver County. The proposed pilot operation would produce metallurgical alumina, potassium sulphate fertilizer (SOP) and sulphuric acid by processing alunite ore trucked in from the company‚Äôs Blawn Mountain alunite deposit located approximately 25 miles southwest of Milford.  

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