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Newspaper
Anaconda Standard
Location
Anaconda, Montana, United States of America
Date
Aug 19, 1913
Page
13
A detailed report covers roasting and leaching tailings at Anaconda Copper, cost estimates, and potential copper recovery of 6.5 cents per pound. It describes project scale, 3000-ton daily capacity, and the economics of using roaster gases to generate cheap acid.
E P Mathewson of Anaconda presents a paper on the development of the basic lined converter for copper mattes. He recounts experiments by Gilchrist, Vautin, Keller, and others, noting cost and limited advantages, with early trials at Anaconda and Great Falls and later in Butte and Utah, around 1903 to 1905.
A historic paper by John Gillie details the rise of electric use in the Butte district after 1912. It notes the Canyon Ferry hydro electric plant enabling affordable power and lists main applications such as hoisting, rock drills, pumping, ventilation, lighting, tramming, and shop motors. The Anaconda Copper Mining Company runs 22 shafts and plants in the area, with 15 large facilities.
Frederick W Apgar of Jamaica New York presented a paper at the evening session titled The Use of the Microscope in Mining Engineering. He outlined the microscope as a tool for ore and rock analysis and its role in solving practical mining problems from prospecting to milling and smelting, including the valuation of mining property and ore quality considerations.
The article discusses how depth affects mine actions and the likelihood of occurrence at lower levels. It explains that primary mineralization and secondary processes reveal themselves under the microscope, aiding identification of rocks and minerals. The piece stresses the microscope as a useful tool in ore processing from extraction to surface treatment.
H T Van Ells describes the cost accounting system used at the Aficonda Copper Company mines. The paper details labor material and redistributable allocations across operating and repair accounts, with direct charges and redistributable divisions for items such as development, draining, mining, hoisting, repairs, and general expenses. It notes monthly payroll checks, cost per ton calculations, and annual balance sheet checks.
President Rand thanks Mr Kelley and hosts at Great Falls Helena and Butte for a cordial welcome. He cites Mr Goodale Professor Bard and the committee on arrangements for making the meeting possible and notes the board of directors’ thanks. He mentions important papers for consideration and ends with brevity.
C F Kelley vice president of Anaconda Copper Mining Company delivered a warm welcome on behalf of Butte institute members, local operators, and citizens. He expressed honor that Butte hosts the gathering and extended cordial greetings to the American Institute attendees. Continued on Page Fourteen.
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