Show BIG INDIAN MILL OPERATING I 1 the new milling plant of the big indian copper company located five miles south of la sal utah which was constructed to treat large beds of sandstone impregnated with copper carbonates has been given its initial tryout apparently with success according to the following article in the moab times no longer is there any doubt as to the success of the big indian copper reduction process during the past week the mill has been running steadily and already nearly two tons of concentrates have been produced on tuesday night the plant was closed down for examination after forty four hours of continuous precipitation and everything was found to be in good shape and running perfectly the process for which the mill has been designed about 80 per cent of the copper in the ore the remaining 20 per cent comes down as copper sulphate which cannot be precipitated by means of steam this percentage of the copper will be saved by means of scrap iron on which it will be precipitated later a simple and satisfactory process for precipitating the copper sulphate which has already been worked out will be installed preston G peterson secretary of the big indian copper company came down from the mill last night and reported that the mill was operating in a highly satisfactory manner that the process is proving to be economical and a quick method of precipitating copper from the ore there is no longer any doubt he said and the re suits have more than justified the construe tion of the big mill the product from the mill at this time is a concentrate running about 80 per cent in copper of which nearly two tons have 1 already come through the towers later on this precipitate will be roasted and smelt ed and pure copper bullion will be shipped out from the mill the actual operation of the mill has proven that a number of changes in handling the process will still have to be made before the best results can be obtained it is the intention of the company secretary peterson said to run continuously for forty days and produce about two carloads of pre civitate to prove beyond question the ef fici ency of the process after this is done the plant will be shut down for a month i or so during which time the change in the design of the mill will be made by fall or early winter it is figured that all of the redesigning designing re of the big plant will be completed the capacity of the mill will thereby be enlarged and actual permanent milling operations on a large scale will commence we ve feel have got ovar over the top now said secretary peterson heretofore the only question about the enterprise was whether or not the new process which has been tested thoroughly in laboratories and found successful would work out on a large scale we know now that it will and all of the remaining work to be done is only for the purpose of bettering our methods of handling the process to the best advantage and to the end of increasing the output |