A solvent free method for the Sonogashira coupling reaction was established under ball milling conditions without the use of copper or additional ligands.
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The haul trucks carry the ore out of the pit along a haulage road with a slope of no more . South Mill are called SAG (semi autogenous grinding) mills and ball mills. . Only then are the copper minerals broken free of the rest of the rock to be.
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t Bureau of Mines Report of Investigations/1985. ~. Influence of an Organic Polymer in Ball Mill Grinding of Quartz,. Dolomite, and Copper Ore. By A. R. Rule.
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