Weekly Arizona journal-miner., 1905-08-16
Machinery On Ground And More Is On
 The Way
Brief Account of The New VO1atization
 Process
(FIom Saturdays Daily.)

Within ninety days it is expected that the Rigby Reduction Works at Mayer will be in operation. Two carloads of machinery are on the ground, and three carloads are on the way, and as soon as this is installed one of the most complete plants in the West for the treatment of silicious ores will be ready for business.
 So stated Colonel T. Johns Rigby yesterday, who was up from Mayer on short business trip. He is pre- sident and general manager of the Rigby Mining and Reduction Con- pany, and before he decided to erect a plant at Mayer, travelled extensively through the northwest, California, and New Mexico, to seek location in mineral belt that would be best ad- apted for the success of the enterprise contemplated.
 After selecting the Mayer district because of the character of the ore and the permanency of the quantity afford 1 ed, he began the construction of the | plant three years ago. Before it was completed, some of the financial back | CTS of the project were unable to fur | nish the funds subscribed on account ;! of being caught in the financial mael- strom caused by the slump in steel, in which stocks they were interested.
 Rather than employ the credit of the company to obtain the necessary funds, and unwilling to contract any indebt- edness, Colonel Rigby suspended con struetion operations. Ample capital is now available, and no further draw backs exist to the consummation of the enterprise.
 All the buildings, ore bins, etc, are completed, the machinery has been made and paid for, much of it is on the ground, and the rest in transit. The works will be ready to start up by next October, beginning with four furnaces capable of handling 125 tons per day, to be enlarged as the need The superintendent and engineer is H. A. Clarke, who is also well known in Colorado. This will be the first application of the new method of treating ores by vola- tilization of the metals, on a commer- cial scale
 It is known as the Pohle-C -Croasdalel process, and it has taken three years to bring it to metallurgieal and me 1 chanieal perfection. It is now regard ed by those who understand it as one of the great metallurgical discoveries { Df the age for the treatment of gold, silver, and copper bearing ores. A great many demonstrations have been { made iu the presence of mine owners It the experiment station in West Den yer. For want of space the process I ,an only be briefly epitomized. The T operation is, first, one of crushing the t ore; second, its subjectiOn to a desul- roast to expel the sulphur; I hird, volatihzing the metals; and, C 'ourth, eondensing them in chambers } provided for the purpose, where by t imple chemical processes 95 to 9s l 'er cent of the values are recovered. It i g entirely automatic from the dis a harge of the ore into the roasting urnaee. It is also of such extreme implicitly that the expense of con a lueting the same at any point where s osts are Lot excessive and at a rate Ii arying between 100 and 500 tons of Ii re per day, will range below that of $ ny ether form Of treatment. lp