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Bond Work Index Formula-Equation - 911 MetallurgistApr 18, 2018 . The work index Wi can be determined from plant operations and from laboratory ball mill grindability, rod mill grindability, and impact crushing tests. The laboratory test results are used to check the efficiency of commercial operations and to compute the proper machine sizes for new installations.bond mill plant,Bond Work Index Procedure and Method - 911 MetallurgistSep 22, 2017 . This Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore samples. These equation application methods are used to process <1/2″ ore samples in a Ball Mill using a standard ball charge. Below describes in general terms the.bond mill plant,Dura-Bond Industries | Located in the Heart of the Marcellus ShaleLocated in the heart of Pennsylvania's Marcellus Shale Region Providing ERW LSAW Pipe Fusion Bond Epoxy Powercrete and Pipeline Products.