As the world’s appetite for minerals grows, the American mining sector gains steam at the turn of the 19th century

In 1896, Engineering & Mining Journal (E&MJ) celebrated its 30th anniversary. The weekly tabloid more than doubled in size from the usual 20 pages to 36 pages or more. The mast read Engineering and Mining Journal with a flame safety lamp above the word COAL. Photography gradually began to replace the lithographic engravings.

E&MJ Satisfies a Thirst for Knowledge

Rossiter W. Raymond had passed the torch to Richard P. Rothwell. He became the editor, but had been working for E&MJ for nearly 20 years. The Scientific Publishing Co. published the title and the offices moved from Park Row to Broadway, and mining engineers visiting New York City were still encouraged to visit the office. Raymond was now practicing law, but he still wrote regularly. More often, he revealed a melancholy flavor as he wrote obituaries for friends that contributed to his success and vice versa.

The previous year (1895) was one of the most prosperous in the history of mining. The deals were getting bigger and so too were the scandals. E&MJ continued to expose fraudsters, but the scale was growing more and more immense as English investors began to buy western U.S. mining assets.

In the U.S., society was recovering from another financial depression. Copper and coal production, the feedstock for industrial demand, was growing at an accelerated pace. Meanwhile, the world was moving away from silver to gold as a form of currency. Looking forward, 1896 promised to reset all records for U.S. mineral production.

Technology continued to advance. Many mines in the western U.S. were harnessing hydroelectricity. The mule was gradually being replaced by the machine.


The Mining Business in 1896

E&MJ estimated the value of the metals produced from domestic ores in 1895 amounted to $241 million, as compared with $194 million in 1894—an increase of 24.2%. U.S. silver production was starting to wane. In 1895, it dropped to 41 million oz from 50 million oz in 1894. Even though prices increased from $0.63/oz in 1894 to $0.65/oz in 1895 (a dollar in 1895 would be worth $28.50 today), E&MJ frequently reminded readers that the production of silver would continue to decline.

Coal production in the U.S. in 1895 totaled 195 million short tons compared with 170 million tons in 1894. The U.S. was rapidly moving up toward first place as the greatest coal producer in the world.

U.S. copper production increased substantially in 1895 as domestic and European demand more than kept pace with increased supply. American copper production grew to 172,300 long tons (or 354 million lb) a 30-million-lb increase over 1894. “…as we pointed out in our last issue the copper in sight is less than at any time since 1887. A striking feature, and of interest from the home point of view, is that in spite of the increase of production and a good demand at fair prices existing abroad, exports have fallen in 1895 to 62,474 long tons as against 76,297 in 1894.”

Foreign copper production fell from 89,031 long tons in 1894 to 86,800 in 1895. “The improvement in copper is a real Godsend to Chilean miners of Antofagasta where costs are so excessive. Miners are now at work, where instead of fighting water as is so often the case, the water for the entire service has to be hauled 40 miles. This looks like an increasing problem for Chile, once the greatest copper producer in the world.”


The New York Copper Market

“The great financial depression which visited our country during 1893 cast its shadows far into 1895. As during previous severe depressions, history repeated itself in this instance too, and it took a considerably longer time than could have been foreseen, even by the shrewdest business men, before the vitality of the country was restored to its fullest extent.”

Manufacturing communities were among the hardest hit: “…a great many of the large railroad systems found themselves after the panic… as for a long time only the most necessary repairs were made, while there was practically a suspension of new orders for a period of about 13 months.” Construction activities were also greatly affected, especially in the rural areas, for manufacturing and private purposes.

Copper consumption suffered too. It was not until the spring [of 1895] that consumption became considerably larger and quickly absorbed the stocks, which had never been very large during the past two years. Demand was for electric purposes and wire-drawers found themselves busier with more orders on their books than at any period in the history of copper.

Enormous quantities of copper have been used for trolley wires, the extension of trolley roads in the suburbs of larger towns and connecting neighboring centers, and the conversion of horde railroads into electric lines having all at once made extraordinary progress…

The Polyphase Tesla motor.“A most interesting statement is found in the annual report of the President of the Western Union Telegraph Co. for the year ending June 30, 1895, in which it is stated that during the previous 12 months 15,748 miles of new wire were constructed, of which over 10,000 miles are of copper, ‘in accordance with our policy of replacing the defective iron wires on our trunk routes with copper wires.’

Similar reports have been received from Europe, and the continued extension of the telephone system all over the world insures for years to come a very large consumption of copper.”

The demand for copper did not escape the attention of the capitalists. In 1895, a large interest in the Anaconda Co. was transferred to foreign holders, who took one-quarter of the capital stock for $30 million at a price of $30/share, the par value being $25/share. “The Anaconda had always been a closely-held property, and the publication of reports by the company itself and by the purchasers’ experts presented the first opportunity ever given to thoroughly realize the magnitude of this, the largest copper property in the world.” The only mines to compete with it in resources and in present output of copper are the Rio Tinto in Spain, which comes in second, and the Calumet & Hecla, Lake Superior, which is third.

In June 1896, E&MJ would report that the sale of the Hearst interest of 270,000 shares in the Anaconda mine for $27/share, to the London syndicate, represented by the Exploration Co., places “nearly, if not quite, one-half of that stock and perhaps the effective control of that company in foreign hands, practically those of the Rothschilds, who already control Rio Tinto and some other Spanish mines, and who, with the Anaconda output, will control 40% of the world’s copper.”


Gold Begins to Replace Silver

World gold production has, “for a few years past, been the most engrossing subject of discussion in the mineral industry. The partial disuse of silver as money throughout the world has greatly increased the demand for gold and the…purchasing power of gold has been an all-absorbing topic of discussion.”

The increase in gold output from all of the principal countries in 1895 is very pronounced. Total world production is about 9.8 million oz (fine), with a coin value of $203.1 million (or $20.7/oz). The U.S. leads the world in gold production with 2.2 million oz or $44.9 million. (Because production in the rest of the world is measured in kilograms; E&MJ refers to gold production by value.) The whole of South Africa comes a very close second with $44.8 million. Australasian production is $14 million. Russia makes a good showing with $34 million. Gold production has increase $23 million worldwide and by $5.1 million in the U.S.

In the U.S., gold production has increased in all of the mining districts. The greatest has been in Colorado, “…the gold discoveries in Leadville, and the very active exploitation of the mines of Cripple Creek, the latest district, have raised production from $9.5 million, to $15 million. Nearly one-half of this amount, or $7.2 million is from the Cripple Creek district alone. Leadville produced $1.3 million. California has reached a total of about $15.5 million, owing to the working of many new mines and the reopening of old ones.

Cripple Creek’s production has reached levels which not even its most enthusiastic admirers ever dreamed; a record that has had no equal since the days of Leadville in the West.” Cripple Creek’s population has nearly doubled and the number of producing mines has increased nearly 100-fold.

E&MJ would later report that, on April 29, the town of Cripple Creek has been virtually wiped out by a series of fires, “…which was more than suspected to be the work of incendiaries with the object of plunder, chiefly directed against funds in the First National Bank.”

The destruction of the town by fire does not affect the productive capacity of the mines, “but at the same time it cannot fail to produce a certain disorganization which will probably show itself diminished product this month. We have not the slightest doubt that the characteristic energy of Westerners in general, and Coloradoans in particular will cause Cripple Creek to rise like a Phoenix from its ashes…”

Readers begin to see the autogenous benefits of cascading grinding mills with the Dode pulverizing mill. 

Electric Power Transmission

The development energy converted from water power (hydroelectricity) for mining purposes is steadily gaining favor. Perhaps the most noticeable units in the U.S. are two three-phase mining plants (the Polyphase Tesla Motor), located near Silverton, Colorado, and at Park City, Utah. “The Silverton plant is the first three-phase plant installed in the Rocky Mountain region. It uses water power taken from the Animas River through a 3- x 4-ft flume, 9,750 ft long. The electrical installation consists of two 150-kW generators, driven by two double-nozzle Pelton wheels. The current, at 2,500 volts, is transmitted back up the mountains, a distance of over three miles, to an altitude of 12,300 ft. above sea level, where it is used to operate various mining machinery in the Silver Lake group of mines and to drive the stamps and crushers in the mill. Previous to the installation of this electrical plant the mines were operated by steam, and the coal cost is $8.75/ton at the mine. These mines will likely save $36,000/yr through the use of electricity.

“The Ontario mine located near Park City, in Utah, uses the power derived from the water of the drain tunnel of the mine—the most expensive tunnel ever constructed by any mining company.” Measuring three miles long, it discharges 1,000 cfm of water from its mouth. This water, under a head of 120 ft drives generators of the General Electric monocyclic type, which furnish current at 2,500 volts for transmission around the mountain to the Ontario and Daly mines, five and a half miles distant, where it drives the mills and lights the surrounding buildings. Current from these machines is also taken to light the neighboring town of Park City.

“The San Miguel Gold Mining Co. are so well satisfied with the result of operating in Southeast Colorado, near Telluride, by long distance transmission, that they decided to largely increase their plant for themselves and neighbors, and the new plant is now being installed. This addition to the plant is supplied by the Westinghouse Co.


The Cyclotomic Transit.The Dodge Pulverizing Mill

“This mill, for pulverizing ore either for amalgamation or concentration, has now gone through sufficient test during the past four years in California, Arizona and elsewhere…” The Dodge pulverizing mill consists of a hexagon drum or barrel, as shown, into which the ore, after passing through the rock breaker, is fed through a hopper. The barrel is lined with forged steel bars (each of the bars seen to the left of the side view form one side of the hexagon), which are held in place by wedges, secured by bolts and steel springs. These bars are spaced at ½-inch and from a grating through which the ore passes to the screens, which are on each side of the hexagon and afford a ready means of discharge for any ore that is crushed fine enough to pass. With the mill being hexagonal in shape, the ore does not slide in mass, as is the case in cylindrical mills.


The Cyclotomic Transit

The novelty of this new transit lies in a floating exterior ring placed around the periphery of the lower plate, upon which the figures from 0 to 360 are engraved. These figures are then no longer a fixed part of the circle, but possess that independent rotation. Instead of turning the whole plate around its vertical axis, we turn a narrow metal band around the stationary plate, which is the same thing. As this band appears to be sliced from the plate, the name Cyclotome has been applied to it, from the Greek words for “ring” and to “to cut,” that is a ring cut or severed from a disk.