Show THE macquisten concentrator concerning the macquisten concentrator iii invented vented and patented by A P S jacquis ten of salt lake city the engineering and mining journal says teh macquisten concentrating process was fully described in the journal of october 26 1907 since that time little has been heard of the process or of the american direct concentrating company salt lake city utah which controls the A P S macquisten patents at the present time there are a double set of three inch tubes fitted for continuous operation and one experimental peri mental 4 foot tube in the testing laboratory of the general engineering company in salt lake the mill at golconda nev where the tubes were first tried in this country was closed down about a year ago it is claimed on account of the long haul from the mines to the mill which precluded profitable operation since that time part of the mill has been torn out and amalgamation plates installed presumably to treat gold ore from nearby mines controlled by the same company A set of four tubes has been placed for trial in the cactus mill at newhouse utah but this mill is not in operation at present the only other installation reported is in a zinc mill at victor mont there four sets of four tubes were installed to treat twenty tons per twenty four hours this mill has recently been closed down on account of severe weather conditions A carload of ore from the nevada consolidated soli dated mines at ely nev has been shipped to sat lake for a trial run and it is reported that it this test run is success successful tubes will be installed to treat the tailings from the steptoe mill |