What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
attached balance weight balk beam bolls bolts Bore bottom brattice bucket cage called candle Carbonic acid chain chaldron Chinley chisel clack cleat coal or stone Coal Trade colliery corf corves crab crib cylinder diameter door drawn drift drill driven drum empty tub fall fathoms feet long fire-damp flat frame frequently full tubs headways headways-course hewer hitch hole hook horse inches broad inches long inclined plane iron joint kirving kitty lamp lever means Memel metal Mines Nicholson paid passing piece pipe placed planks props purpose putters pyrites quantity rails rent rods rolley-way rolleys roof round safety lamp seam of coal set of pumps shale sheth side sinking skreen small coals spears Staiths stoppings strata stratum surface timber tram tub wheel tubs of coals underground usually ventilation wages waggons wedging weizes wheel winding engine wire wire rope wood yards
Page 27 - The next stage is when that crack is completed, and it assumes the shape of a metal ridge. The next is when the metal ridge reaches the roof. The next stage is when the peak of the metal ridge becomes flattened by pressure, and forced into a horizontal direction, and becomes quite close; just at this moment the coal pillars begin to sustain part of the pressure. The next is when the coal pillars take part of the pressure. The last stage is when it is dead...
Page 2 - ... given on the Tyne, and 18 guineas on the Wear, and progressive exorbitant bounties were paid to putters, drivers, and irregular workmen. Drink was lavished in the utmost profusion, and every sort of extravagance perpetrated. Nor did the evil end here, for a positive increase in rates and wages was established, to the extent of from 3o % to 4o %2.
Page 4 - A species of hitch; the roof of the seam coming down into the coal without any corresponding depression of the thill, thus causing a nip.
Page 48 - Eng.) To sit with the balls of the feet upon the ground and the knees bent, so that the thighs rest •on the calves of the legs. This position no doubt became habitual with miners from the nature of their underground work. (GC Greenwell) Hunt continuous Alter.
Page 69 - A man, according to this estimate, when working to the greatest advantage, should carry a load of 27lb. and walk at the rate of two feet in a second, or a mile and one-third an hour. ' A horse, according to Desaguliers, drawing a weight out of a well, over a pulley, can raise 2001 b.
Page 9 - Llano Estacado." The boring is done by means of oak poles, 1| inches in diameter, in 16 feet sections joined in twos by heavy iron straps. Each boring rod is therefore 32 feet long with a male screw at one end and a female screw at the other, both having very strong and heavy threads. The drill has a straight edge of 3.^ inches, and is attached to an iron rod 30 feet long and 1£ inch in diameter. To the upper end of this rod (or sinker) is attached a pair of iron slips, having a play of 16 inches...
Page 71 - ... slightly tapering round stick, used as a pattern for the opening through which molten metal is to be poured into the mold. (Standard) Running amain (Scot.). The running of a winding rope down into the shaft, due to failure of brake or other appliances. (Gresley) Running balk (Eng.). A set of timbers in the direction of a drift (at its side instead of across it) to form a support for the crosspieces. A running balk at each side, with balks or planks supported by them, is the common method of timbering...
Page 3 - At a back there is frequently a glossy parting, and sometimes a little sooty, dirty coal. When, on approaching a back, it is observed to form an acute angle with the thill of the seam, it is called an East back ; when it forms an obtuse angle, it is called a West back.
Page 68 - ROLLERS. — Made usually of metal, sometimes of hard wood, and placed upon inclined or other planes, to support the ropes and remove the friction which would be occasioned by their dragging along the way. ROLLEY. — A carriage used formerly to carry tubs or corves along the horse-roads underground. The rolley was contrived as an improvement upon the tram upon which a single corf was placed ; a horse drawing one, two, or three corves at a time.
Page 87 - Creep. (Century) 2. The ruins of the fallen roof, after pillars and stalls have been removed. (Raymond) Thrust fault. See Fault. Thrust plane. The plane of a thrust or reversed fault. (La Forge) Thud (Eng.). A dull and heavy report made by the rending of the strata far overhead when the coal has been extracted. (GC Greenwell) Thulite.