Mining engineer

“ The profession of mining engineering, last of the major branches, embraces all work having to do with the locating and construction of mines—coal-mines, iron-mines, copper-mines, diamond-mines, gold-mines, and the like. Also it establishes the nature of the apparatus used, though more often than otherwise the mechanical engineer in this regard is consulted, since much of the machinery utilized in mining operations is the direct work of mechanical engineers. Screens and hoppers are mechanical devices the result of mechanical engineering genius ”

“ But, of course, more is wanted on a mine than a man who can direct the sinking of shafts, driving of levels, and stoping of the lode. Much loss and disappointment have resulted in the past from unsuitable, ineffective, or badly designed and erected machinery, whether for working the mine or treating the ores. To obviate this defect a first-class mining engineer is required. ”

“ Many men seem to think that should their destinies lead them into parts of the world where there is mineral wealth they will have little chance of discovering the deposits without the technical education of a mining engineer. This is wrong. The fact is that the sphere of the prospector does not cover that of the engineer. The work of the one ends where that of the other begins, and many of the most successful discoverers of metallic wealth have been entirely ignorant of the methods by which a great mine should be opened, developed, and worked. ”

“ The limit, nevertheless, has been reached in many rich mining districts. Pumps of the most approved type, and driven by the largest and most economical steam-engines, have done their best in the struggle against the difficulty; and yet the water has beaten them. Rich as are the lodes which lie beneath the water, the mining engineer is compelled to confess that the metal value which they contain would not leave, after extraction, a sufficient margin to pay for the enormous cost of draining the shafts. ”

“ There has never been a mining swindle floated on the public which has not had engineer's reports by men of high standing, showing it to possess a value which after events proved quite unreliable. So my father made me a mining engineer, and before he touches any property of this nature, or advises his clients to invest, he compels the promoters to send me out to the mine, and investigate. ”

“ From the nature of things, metal mines do not, like our cities and settlements, lie in those regions covered deep in rich soils. Our mines must be found in the mountains and deserts where rocks are exposed to search. Thus they lie away from the centers of comfort and culture,—they are the outposts of civilization. The engineer is an officer on outpost duty, and in these places he is the camp leader. By his position as a leader in the community he has a chieftainship that carries a responsibility besides mere mine management. ”

“ But of more pertinent force is the fact that as the certain life of a metal mine can be positively known in most cases but a short period beyond the actual time required to exhaust the ore in sight, not even a decade of life to the enterprise is available for the estimates of the mining engineer. Mining works are of no value when the mine is exhausted; the capital invested must be recovered in very short periods, and therefore all mining works must be of the most temporary character that will answer. The mining engineer cannot erect a works that will last as long as possible ”

“ The most dominant characteristic of the mining engineering profession is the vast preponderance of the commercial over the technical in the daily work of the engineer. For years a gradual evolution has been in progress altering the larger demands on this branch of the engineering profession from advisory to executive work. The mining engineer is no longer the technician who concocts reports and blue prints. ”

“ I am not studying for railway engineering—I am going in for mines. It’s a different course altogether, and in some ways much more difficult. There seems nothing that a mining engineer ought not to know—assaying, and surveying, and everything to do with minerals, and, of course, a thorough understanding of pumps, and all the machinery employed. ”

“ No matter how splendid a company's holdings may be naturally, there cannot be expected any profits from the workings of the deposits if there be not a sound business management. H. C. Hoover, the prominent mining engineer and mine manager, says, "Good mine management is based upon three elements: first, sound engineering; second, proper coördination and efficiency of every human unit; third, economy in the purchase and consumption of supplies." ”

“ Whenever a piece of mining property is to change hands, it is the proper procedure to employ an expert engineer to investigate the ground and the improvements and so arrive at some estimate concerning its intrinsic value. Nobody is infallible and it is a trite saying that "nobody can see into a mine farther than the last drill hole." ”

“ Geology is not a mathematical science, and to attach a money equivalence to forecasts based on such evidence is the most difficult task set for the mining engineer. It is here that his view of geology must differ from that of his financially more irresponsible brother in the science. The geologist, contributing to human knowledge in general, finds his most valuable field in the examination of mines largely exhausted. The engineer's most valuable Page 22 work arises from his ability to anticipate in the youth of the mine the symptoms of its old age. ”

“ Every mine, whether it be of gold, silver, tin, copper, or other metal, requires the supervision of a thoroughly qualified metallurgist and chemist, and one who is conversant with the newest processes for the extraction of the metals from their ores and matrices.
It has then been stated that to ensure effective working each mine [120] requires, in addition to competent directors, a business-manager, mining-manager, and assistants, engineer, chemist, and metallurgist, with assistant assayers, &c., all highly qualified men. ”

“ An engineer provided by Paragon was used to map out or show each of the contractors the particular direction his mine was to take, the locations of adjacent mines, etc. The single engineer was utilized for all of the mines to ensure that they would not run into each other and also so that no minable coal would be rendered unrecoverable by haphazard mining methods. ”

“ For the rest, half a dozen or more mines may collectively retain the services of a mine manager of high attainments as general inspector and superintendent, and the same system could be adopted with respect to an advising metallurgist and an engineer. For gold, as indeed for other metals, a central extracting works, where the ores could be scientifically treated in quantity, might be erected at joint cost, or might easily be arranged for as a separate business. ”

“ And yet, with all the above restriction in our nomenclature, we have not reached one very important consideration, one which we have been approaching for a number of years and which, of late, has been met and forcibly applied by the best men in the profession of mining engineering.
An excavation that will produce coal, metals or gems is not necessarily a mine. The simple fact that a man can get some gold-bearing dirt from a hole in the ground does not mean that he has a mine. ”

“ In the early stages of American mining, with the moderate demand on capital and the simpler forms of engineering involved, mining was largely a matter of individual enterprise and ownership. These owners were men to whom experience had brought some of the needful technical qualifications. They usually held the reins of business management in their own hands and employed the engineer subjectively, when they employed him at all. ”

“ The management of the mines is intrusted to a skillful engineer, Mr. Oscar F. Lamm. The writer has investigated the conditions under which men work, and has been to the face of the mines where they were at work, and can testify that the stories circulated about hard usage in the mines are wholly unfounded, except by persons who consider all labor, particularly mining, hard usage. ”

“ To be sure, if they are ignorant along mining [164] lines, they can, and often do, place the blame for their shortcomings upon their manager, their consulting engineer, or their superintendent. But this is not an auspicious state of affairs and it were well for stockholders to see to it that they elect to the directorate men who are cognizant of mining economics.
The well-organized mining concerns of today maintain their engineering staffs just as completely as do other great technical businesses. The engineer is a very important man in mining affairs. ”

“ Mines are operated only to earn immediate profits. No question of public utility enters, so that all mining projects have by this necessity to be from the first weighed from a profit point of view alone. The determination of this question is one which demands such an amount of technical knowledge and experience that those who are not experts cannot enter the field,—therefore the service of the engineer is always demanded in their satisfactory solution. ”

“ The services of the most skillful mining engineers are retained, at salaries which no individual operator could afford to pay. Their forces are well organized, their mining operations are conducted with system and economy, and they are able to keep abreast of the age in all inventions and appliances that insure greater facility in mining and manufacturing, and greater safety to the workmen. Their employees are paid promptly at stated periods, and the possibility of a workman losing his wages by reason of neglect or failure on the part of his employer is reduced to a minimum. ”

“ Speculation was very rife at the time; and amongst the most promising adventures were the companies organised for the purpose of working the gold and silver mines of South America. Great difficulty was experienced in finding mining engineers capable of carrying out those projects, and young men of even the most moderate experience were eagerly sought after. The Columbian Mining Association of London offered an engagement to young Stephenson, to go out to Mariquita and take charge of the engineering operations of that company. ”

“ In our day the mines are worked upon scientific principles, under the guidance of the ablest mining-engineering talent procurable in America. There are elaborate works for reducing the blue rock and passing it through one process after another until every diamond it contains has been hunted down and secured. I watched the “concentrators” at work big tanks containing mud and water and invisible diamonds—and was told that each could stir and churn and properly treat 300 car-loads of mud per day 1,600 pounds to the car-load—and reduce it to 3 car-loads of slush. ”

“ However, as the lowest layers are nearly four miles deep, they will probably never be worked."
"Why not?"
"To start with, the cost of haulage to the top would be enormous. But, aside from that, a good [Pg 48] many mining engineers figure that the temperature at that depth would be above boiling point. You know, in general, the farther you go down in a mine, the hotter it gets."
"What do you mean by a seam being 'workable'?" the boy queried. "Can't all coal be dug out?" ”

“ The industry has also profited by the improved methods adopted to facilitate the transfer of the ore in transit and especially by the use of machinery and the mining operations themselves. Furthermore, in the principal mining range—Mesabi—the ore is sometimes found so near the surface that with the removal of a few feet of earth it is mined by the open-pit method, the ore being scooped by huge steam shovels directly from the pit to the car. ”

“ I’m taking you to the best mining state in the Union, where you can handle the stuff right on the ground, find your own lodes, study mineralogy with the minerals in your own hands,—so you will know carbonate ore when you see it. That’s half the battle; the technology of process work you can pick up right at the mines and mills. There’s lots of room for the young mineralogist who can go right along with his own saddle horse and outfit, take care of himself in a dry country, and know real lodes when he sees them. ”

“ The miners work is as follows; first they sink a shaft so many feet down, and then when they get down deep enough they start sapping forward, putting up timbers as they go. They have to work very quietly as Fritz also does some sapping and if too much noise is made the miners themselves are liable to go up in the air and come down in pieces, and I do not think that anybody would relish that idea. Mining is done now on a very large scale. ”

“ An ore must be an aggregate or association of natural [20] minerals, or a single mineral, from which metal may be profitably recovered. Mines are excavations in the earth from which ore, coal or gems are taken. Mining is the art or practice of operating mines.
Throughout the subject, we see the inseparable idea of profit. The work of carrying on operations in a railroad tunnel is not mining; the driving of adits through barren rocks to reach ore bodies is not mining; the sinking of shafts through worthless "wash" or rocks with a view of opening avenues for the removal of ore is not mining. ”

“ Some mines cannot be economically operated without the treatment of the ores upon, or close to, the mining property. With certain sorts of low-grade ore, or with those kinds of ores that may be concentrated before shipment, provision should be early made for the erection of appropriately designed mills. We say the subject should be considered early, but we do not advocate the premature erection of any mill. ”