. Our iron roads: their history, construction and administration . hom the whole arrange- ments are understood to have been made, so completely to task utmost every pound of power employed as to exhaust its whole effort in useful work—leaving no superfluous power to be in the production of useless uproar or mischievous n, and thus saving at a blow not less than £7,000 to the railway company. A similar blasting, on a small scale, was made on the Lon- •:rry and Coleraine line. It having been found necessary irry on the works, it was determined to throw a hill into the sea, through which a tunnel
. Our iron roads: their history, construction and administration . hom the whole arrange- ments are understood to have been made, so completely to task utmost every pound of power employed as to exhaust its whole effort in useful work—leaving no superfluous power to be in the production of useless uproar or mischievous n, and thus saving at a blow not less than £7,000 to the railway company. A similar blasting, on a small scale, was made on the Lon- •:rry and Coleraine line. It having been found necessary irry on the works, it was determined to throw a hill into the sea, through which a tunnel had been commenced, EMBANKMENTS. 127 This took place in June, 1846. A heading or gallery wasformed in the rock from the side of the cliff, fifty feet inlength, at the end of which a shaft was sunk, for twenty-twofeet, to the level of the railway, and again another gallery wasmade at the bottom, running at right angles to the first, andfarther into the rock. At the end of this was placed 2,400pounds of powder, the earth was well filled in, and the wires for. MAKING THE WOLVERTON EMBANKMENT. the passage of the electric fluid carefully arranged. The smallercharge of 600 pounds was then placed higher up in the the explosion being made, the bottom of the mass heavedoutwards for a moment, trembling with the force exerted on it,and then, cracking into a thousand fissures, rolled into thesea. The amount of material removed was upwards of 30,000tons. When the level of a railway has to be raised, it is usually 01 K [RON R( >ADS. an embankment The material, as we have seen, islined from a neighbouring cutting;—the engineerin la railway, having arranged that the cmbank- ttings shall in amount about equal one another,which the stuff is conveyed to the em-: is called the lead. The first thing in the formationn embankment is the shaving off to the thickness of sixinches of the turfs, if any, at the base of the intended line,they are put aside for sodding down the slopes of
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1883
