Submitted on: 23 April 2012.
Revised on: 04 June 2012.
Accepted on: 25 June 2012.
MINERALS ENGINEERING
Submitted on: 06 August 2017.
Revised on: 31 August 2017.
Accepted on: 27 September 2017.
MINERALS ENGINEERING---PERGAMON-ELSEVIER SCIENCE LTD
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