Coal miner

“ Any experienced miner can tell when the face of the breast is approaching the outcrop; the coal becomes softer, changes in color, breaks into smaller pieces, sometimes water runs down through. It is obviously unsafe to erect buildings on the line of this outcrop, or immediately inside of it, where the roof is thin. There is no assurance that the body of coal left will not slip down the breast; and the pillars of coal near the surface are so soft that any disturbance of this kind may cause them to give way and let down the entire thickness of strata above them. ”

“ Outside in the sunshine-flooded canyon, long lines of cars rolled down with their freight of soft-coal; coal which would go to the ends of the earth, to places the miner never heard of, turning the wheels of industry whose products the miner would never see. ”

“ So you see, Anton, every coal mine is different, with its layers or seams of coal of different thicknesses and at varying distances apart. Some pits are near the surface, some are very deep; some coal is full of gas, other has very little; some coal is so hard that every bit of it has to be blasted, in other mines the coal is so soft that the hewer spends half his time spragging the face so that the coal doesn't fall on him when he's undercutting or holing. Don't you make the mistake of thinking that all a miner has to do is to use his pick! ”

“ Where the coal is thickest, no less than 10 bands of it are worked in this way, as is shown in fig. 849. When any band of the coal is foul from sulphur or other causes, it is left for the next platform, so that a large proportion of it is lost, as in the Staffordshire mines. Much attention must here be paid to the vertical distribution of the pillars and apartments; the miner’s compass must be continually consulted, and bore-holes must be put down through the coal scaffoldings, to regulate correctly the position of the pillars under one another. ”

“ He does not take kindly to other kinds of work. He rarely deserts his occupation of mining to take up any other calling, and it may be said that after he has passed middle age he never does. There is a fascination to the old miner about the dark chambers, the black walls, the tap of the drill, the crash of falling coal, the smell of powder smoke in the air, a fascination that is irresistible. He would almost rather die in the familiar gloom of the mine than live and toil in the sunlight on the surface. ”

“ They work on bad roads, up to their knees in water, and bent nearly double. The consequence of this is that they are attacked with disease, drag out a miserable existence, or are brought prematurely to the grave.” Says Robert Bold, the eminent miner: “In surveying the workings of an extensive colliery underground a married woman came forward, groaning under an excessive weight of coals, trembling in every nerve, and almost unable to keep her knees from sinking under her. ”

“ To obviate this loss, the method now generally adopted is to drive narrow rooms or passages, seldom exceeding fourteen feet, through the seam, leaving large pillars—about seventy-five per cent. of the mineral—until the extremity of the available coal is reached. When, however, no regard is to be had for the surface, and the coal has been thus worked out as far as can be done, the miner commences to work backwards, taking out the stoops or pillars as he goes. The whole roof of the mine then comes down; and this is the most dangerous kind of subsidence. ”

“ We seat ourselves on lumps of coal, and at the end of the hole we see a miner crouched upon the ground, hacking out a space about eighteen inches deep, into the coal at the bottom, forming a sort of recess wide enough to slip in a six inch drawer the whole width of the place; the labor of doing this is inconceivably great in the miner's cramped position; he pants loudly at every stroke of the pick, and breathes an atmosphere of thick coal dust. When he has scooped out the bottom place, he cuts, with a very sharp pick, a slice down each side, leaving the mass supported only by its hold above ”

“ Mine operators and mine workers of whatever mines are necessary to meet the needs of the country must be paid for a year's work. The shorter the working year the less coal is mined per man and per dollar invested in plant, and eventually the higher priced must be the coal. It is obvious that the 264 short tons of coal mined by the average British miner last year could not be as cheap per ton as the 942 tons mined by the average American mine worker, backed up as he was with more efficient plant. ”

“ When it is once in contact with the oil, operating expenses are trifling, for in many cases the oil reaches the surface under natural gas pressure, and in others it has merely to be pumped. There are not the expenses for breaking rock, timbering, or haulage, which are common in coal mining.
So that in addition to being a better fuel than coal to burn under a steam boiler, petroleum mining is as healthful and safe an occupation as can be well found in contrast with the extremely dangerous work of the coal [Pg 85] miner, and it can be far more quickly and more cheaply got out of the ground. ”

“ The absolute shape of the coal-fields in Great Britain has been ascertained with surprising precision. To whatever depth a coal-mine is drained of its water, from that depth it is worked, up to the rise of the water-level line, and each miner continues to advance his room or working-place, till his seam of coal meets the alluvial cover of the outcrop, or is cut off by a dislocation of the strata. In this way the miner travels in succession over every point of his field, and can pourtray its basin-shape most minutely. ”

“ The coal must be undercut as far in as a pick or a mechanical coal-cutter will reach, for the entire width of the face. Every few feet, short props or sprags are put in from the edge of the undermined portion to the floor, to prevent a premature fall, which might bury the miner.
When the whole face is undercut and spragged, the shot-firer is summoned. One or more holes, three feet deep, are bored in the coal, close to the roof, these holes are filled with explosive and tamped shut with moist clay, and the charges are fired. ”

“ The method used in Mine 33 was what is known technically as “shooting off the solid,” that is, drilling a deep hole in the solid coal body and blasting it down very much as rock is blasted in railroad building operations. This method, while it procures the greatest amount of coal with the least expenditure of labor, is at the same time very expensive to the miner who must buy his powder and in addition to his regular blacksmith tax must pay for the sharpening of all the drill bits.
It is in these blasting operations that so many men in soft-coal mines lose their lives. ”

“ It very rarely occurs that a chamber, worked to its limit, has needed no propping from its foot to its face. Usually a good part of the miner’s time is occupied in setting props as his work at the face advances.
Every seam has its top and bottom bench of coal, divided about midway by a thin slate partition, and one bench is always taken out to a horizontal depth of four or five feet before the other one is mined. If the upper bench contains the best and cleanest coal, with the smoothest plane of cleavage at the roof, that is first taken out ”

“ They are found most commonly in faults, in cracks in the coal seams, or in open spots in the body of coal, where they have opportunity to accumulate. They contain, besides marsh gas, less than one per cent. of carbonic acid, and from one to four per cent. of nitrogen. It is impossible to anticipate their coming; the miner’s drill may strike into one and free it at [161] any time without a moment’s warning. It may even burst through the face by its own power. ”

“ Then they cave in and great lumps of coal fall down on the men. Sometimes gas or fire-damp collects. Then there is danger of choking or of being blown up. Sometimes, in blasting, the coal catches fire, so that the whole mine burns.”
Can you tell a story about the journey of a ton of coal from the time the miner digs it out of the mine, and boys sort out the slate, until it is put into the furnace in a house?
“Why, miners must be as brave as soldiers,” said Wallace. ”

“ The gas frequently issues with great force from cavities in the coal (in which it has been pent up) , when the pick of the miner breaks an opening for it. In these circumstances an explosion is inevitable, if the issuing stream of gas happen to be directed full upon the lamp. Fortunately, however, this is a contingency which does not often arise. It is one of those risks of coal-mining which seem absolutely unavoidable by any amount of care or caution. It would be well if it were only such risks as these that the miner had to face. ”

“ That's why, nowadays, the miners who get out the coal seldom or never fire the shots. Experienced men, trained especially for that work, are used. After a miner has undercut the coal, [Pg 38] the shot-firer comes. He tests for gas before he begins work, bores a deep hole in the coal with a drill, tests for gas again in case he should have tapped a leak in the seam, cleans out the hole, sends the miner for the box of explosive—which is kept thirty or forty yards away from the face where the coal is being cut—and prepares the charge with a detonater which he carries in a box over his shoulder. ”

“ The grade down to the port is very steep, and the heaviest work for the engines is in taking the empties back again.
"The coal is mined by white miners, who employ each of them a Chinese labourer; they employ gunpowder for blasting purposes, chiefly Curtis & Harvey's make, and use naked lights of oil. The miners are found in all tools except their auger drills, which they all use, and which cost some $30 each. Each miner has an allowance of one ton of coal per month for his own use. ”

“ It is to be desired, therefore, that coal should exist in large beds, accessible to the miner, and of proper quality for coking. Iron, though it may be in small deposits, should be free from certain impurities and not far distant from fuel and flux. France has no large beds of fine coal, and her iron ore is not of high grade ”

“ There aren't any door-boys in a modern mine. Most of the States in this country have passed laws requiring that all doors through which coal cars pass must be operated automatically. The United States Bureau of Mines keeps a sharp lookout, too. There aren't any donkeys, either, not in up-to-date mines; endless-chain conveyors take the coal from the face where the miner has dug it clear to the mouth of the shaft, and load it into the buckets by a self-tipping device. As for small boys in a mine, as you said yourself, there aren't any, not in the United States, anyhow. ”

“ It is not thought to be given off in appreciable quantities by the coal at the open faces; but it is formed when the carbonic acid passes through any ignited carbonaceous material, or when steam passes over burning coal. It is therefore produced most frequently by smouldering gob fires, by burning wood in the mines, or by a shaft on fire, and may exist as one of the results of an explosion of fire damp or of blasting powder. It is the most to be dreaded of any of the gases which the miner has to encounter. ”

“ Not so very long ago Hal had read an interview which the president of the General Fuel Company had given to a newspaper, in which he set forth the idea that the more experience a miner had the more dangerous it was to employ him, because he thought he knew it all, and would not heed the wise regulations which the company laid down for his safety!
In Number Two mine there were some places being operated by the "room and pillar" method; the coal being taken out as from a series of rooms, the portion corresponding to the walls of the rooms being left to uphold the roof. ”

“ for if there is one type of man to whom I do feel myself inferior, it is a coal-miner. ”

“ The irregularities produced by folds, fissures, faults, and partings are not the only ones with which the miner has to deal. So far we have supposed the coal seams to have been laid down in horizontal layers of uniform thickness, with smooth and regular under and upper surfaces. This is true only in a large sense. As a matter of fact each separate seam varies greatly in thickness, and its roof and floor are often broken and irregular. The beds of clay on which the deposits were laid were pushed up unevenly by the exuberant growth of vegetation from them. ”

“ Many of the men spend this leisure working in their gardens or about their premises. It is seldom that any of them go so far as to have regular extra employment to occupy their time while out of the mines. Indeed the prevailing tendency among miners is to do as little work as possible outside of the mines. The opinion seems to be prevalent among them that when a miner has cut his coal he has done his full duty for the day, and is entitled then to rest and recreation. ”

“ Such a car would contain about one hundred cubic feet, and would hold from two and one half to three tons of coal. The track gauges in common use vary by three inch widths from two feet and six inches to four feet. The miner and laborer start to their work in the [124] morning at six o’clock. If they enter the mine by shaft they must go down before seven o’clock, for at that hour the engineer stops lowering men and begins to hoist coal. Immediately after arriving at the face of his chamber the miner begins to cut coal. ”

“ And in addition to the actual pooling of the power resources of the country, there must come their intensive and economical use—economical by more standards than that of money alone—so that the miner who blasts the coal from the face, the man who sinks the oil well or runs the internal-combustion engine or strings the electric wires, will get in return for the thousands of tons of coal he has mined or the kilowatt hours he has generated from his dynamo, the material basis of the good life. ”