I said that there were miles and miles of these rolley or main-tramways. This one was two miles straight, right away from the shaft. As the air in mines gets foul and close, and does not move, it is necessary to send currents of wind into all the passages to blow it away. The first thing is to get the wind to come down the shaft, and then to make it move along certain passages and so up by another shaft. Only a small quantity of wind can come down, and if that was let wander about at pleasure, it would do no good. So these traps or doors are used to stop it from going along some passages, and to make it go along others, till the bad air is blown out of them. To help this, a large furnace is placed at the bottom of the second shaft, called the up-cast shaft, because the foul air is cast up it.
There are several ways of working mines. This one was worked in squares, or on the panel system. The main roads are like the frame of a window; the passages like the wood dividing the panes of glass; and the masses of coal which remain at first like the panes themselves. These masses are again cut into, till pillars only remain about twelve feet by twenty-four. These pillars are at last removed, and props of wood placed instead, so that the whole mine is worked-out.
The men who do the chief work in the mine, that is, cut out the coal from the bed or seam, are the “hewers.” Dick’s father was a hewer. They have only two tools—a short pick, and a round-bladed spade; with a big basket, or “corve,” into which they put the coal, and a gauze-wire lantern. Suppose a passage first cut; then they hew out chambers on either side, each about twelve feet wide. The roof of them is propped up as the hewer works on, till all the coal likely to fall is hewn away. The hewer’s work is very hard; sometimes he kneels, sometimes sits, and sometimes has to lie on his back or side, knocking away with his heavy pick. Often he is bathed in wet from the heat, for it is very hot down in that black chamber, as the wind cannot pass through it.
In some places, where there is no fear of bad gas, and open lights can be used, the coal is blasted by gunpowder, as rock often is. This, however, cannot often be done; as the bad gas, called fire-damp, may come up any moment, and if set light to, go off like gunpowder or the gas from coal, and blow the chambers and everybody near to pieces.
The cut shows the form of these chambers when the mouth is just being finished. These chambers are in a very wide seam; but some seams are only three feet thick, and the men can in no part stand upright. When all the chambers and passages are cut out in a panel, the pillars of coal are removed, and pillars of wood put in their stead to support the roof. Some of the main passages run on straight ahead for two miles from the foot of the shaft, and the coal has to be brought all this distance on the rolleys, dragged by ponies or horses sometimes. It might puzzle some people to say how the animals are got down and up again. They are let down in a strong net of ropes, and once down, they do not after see daylight. There are regular stables for them cut out of the coal at the bottom of the mine, and they seem to like the life, for they grow sleek and fat.
In Wallford mine, in which little Dick worked, there were employed 250 grown men, 75 lads, and 40 young boys. The hewer’s dress is generally a flannel shirt and drawers, and a pair of stout trousers, a coarse flannel waistcoat and coat, the last long with pockets, a pair of broggers (worsted stockings without feet), and a leathern cap. These at once get as black as coal-dust can make them.
There are different cranes on the rolley-ways, near the side cuttings, and each is under charge of a lad, called a crane-hoister, whose business is to hoist the baskets brought to him by the putters on to the rolleys, and to chalk down the number he cranes on a board. When the train of rolleys reaches the shaft, the full corves are hoisted up, and empty ones let down, which are placed on the rolleys, and carried back for the hewers to fill.
No spirits are allowed in mines, but as the heat and the work makes the people thirsty, tubs of water are placed at intervals, at which they can drink. In their long journeys, the putters stop to “bait,” and are well supplied with bread and cheese, and bacon, and cold coffee or tea.
The miner has not only to fear choke or fire-damp, but sometimes water. A mine has, therefore, to be drained. A well or tank is dug in the lowest level, into which all the springs are made to run. A pump is sunk down to it through a shaft with a steam engine above, by which all the water is pumped out.