He started the car again and drove through a series of tunnels and intersections, a virtual underground street grid, before arriving at a large garage filled with gleaming cars.
He could only steer them towards the Underground Railroad, the secretive systems of bunkers and tunnels running beneath major cities that were developed by the PMF during the ten-year war.
Over width of carriage; height of tunnels, 5 m.
Gauge and the dimensions of the existing tunnels, arches, and other permanent works.
6.92 in.); width between parapets and width of tunnels, 1 m.
It's a series of bunkers connected by tunnels, set up by the PMF to protect the people during the East-West War.
They walked for two hours without running into any tunnels branching off from the main one.
Lana suspected the labyrinth of tunnels and chambers ran beneath the entire town.
We took a lesson from the East-West War and created bunkers and tunnels between cities to escape the eyes of the feds.
When, however, a company desires to construct a line on a commercial scale, to acquire land compulsorily, to divert rivers and streams, to cross roads either on the level or by means of bridges, to pass near houses, to build tunnels or viaducts, and to execute all the other works incidental to a.
The inspections made by the officers of the Board of Trade under this act are very complete: the permanent way, bridges, viaducts, tunnels and other works are carefully examined; all iron or steel girders are tested; stations, including platforms, stairways, waiting-rooms, &c., are inspected; and the signalling and " interlocking " are thoroughly overhauled.
Tunnels, bridges, viaducts, culverts, &c. .
On the one hand he may make the line follow the natural inequalities of the ground as nearly as may be, avoiding the elevations and depressions by curves; or on the other he may aim at making it as nearly straight and level as possible by taking it through the elevations in cuttings or tunnels and across the depressions on embankments or bridges.
The Paris line is built with the standard gauge of 4 ft 82 in., but its tunnels are designedly made of such a small crosssection that ordinary main line stock cannot pass through them.
The cost of constructing the deep tubular tunnels in London, whose diameter is about 15 ft.
Water is drawn through tunnels from a submerged crib about 5 m.
Jersey City is served by several inter-urban electric railways and by the tunnels of the Hudson & Manhattan railroad company to Dey St.
Two tunnels were built approximately parallel, each taking a single track.
Two lateral tunnels were also constructed, making the total length 63 m.
Some of the metropolitan railway lines cross the river in tunnels beneath its bed.
The Metropolitan and the District lines within London are for the most part underground (this feature supplying the title of " the Underground " familiarly applied to both systems); the tunnels being constructed of brick.
Four lines of surface tramways and four railway lines in shallow tunnels were proposed along these avenues.
The mistake is often made of sinking large and expensive shafts, or driving costly tunnels, before it is fully proved that the deposit can be worked on a scale to warrant such developments, and, indeed, too often before it is known that the deposit can be worked at all; and in too many cases large amounts of money are thus unnecessarily lost by over-sanguine mine managers.
As soon as it appears reasonably certain that the property is workable the mine will be opened by one or more shafts, drifts or tunnels, and the underground passages for active mining operations will be started.
Drifts, entries and tunnels find their chief application in mining regions cut by deep valleys.
In many mining regions long tunnels have been driven at great expense to secure natural drainage.
Under modern mining conditions drainage tunnels have lost much of their former importance.
In the Alpine tunnels, where the air was moist and probably not as pure as in the Comstock mines, great difficulty was experienced in prosecuting the work at temperatures of 90° F.
Deep were then sunk, and the chalk taken from horizontal tunnels was brought to the surface and spread on the land at the rate of about 60 loads per acre.
This railway, which was completed in 1854, is the oldest of the great continental mountain railways, and is remarkable for its numerous and long tunnels, its viaducts and galleries.
This decrease was largely caused by the practical suspension for many years of the hydraulic mining operations, in preparation for which millions of dollars had been expended in deep tunnels, flumes, &c., and the active continuance of which might have been expected to yield some £2,000,000 of gold annually.
Bees can excavate timber and make their brood-chambers in hollow plant-stems.
The district is served by numerous branches of the Great Western, London & North Western, and Midland railways, and is intersected by canals, which carry a heavy traffic, and in some places are made to surmount physical obstacles with remarkable engineering skill, as in the case of the Castle Hill tunnels at Dudley.
Side of the platform had been ruined by the post-Assyrian use of the mound for a cemetery, and for tunnels for the storage and concealment of grain.
The transformations from the larval state are completed within the gall, out of which the imago, or perfect insect, tunnels its way, - usually in autumn, though sometimes, as has been observed of some individuals of Cynips Kollari, after hibernation.
The whole surrounding country is seamed with miles of tunnels in granite, and the hillsides are dotted everywhere with enormous dumps.
These pink, worm-like creatures live in sandy, moist localities, burrowing little tunnels and never appearing on the surface.
Other auriferous gravels are buried under the upland lava flows, and are now reached by tunnels driven in beneath the rim of the table mountains.
The former constructs its tunnels in the sandy flats near the shore at the Cape, but the latter generally frequent higher ground.
In ancient, and probably pre-Roman, times this district was drained by an elaborate system of cuniculi, small drainage tunnels, about 5 ft.
Bergen is the nearest port to the famous Hardanger Fjord, and is the starting-point of a remarkable railway which runs through many tunnels and fine scenery towards Vossevangen or Voss.
Meanwhile mining below the bottom of the pits by means of shalts and underground tunnels had been commenced; but the full development of modern methods dates from the year 1889 when Cecil Rhodes and Alfred Beit, who had already secured control of the De Beers mine, acquired also the control of the Kimberley mine, and shortly afterwards consolidated the entire group in the hands of the De Beers Company.
Figure 8 also explains the modern system of mining introduced by Gardner Williams. A vertical shaft is sunk in the vicinity of the mine, and from this horizontal tunnels are driven into the pipe at different levels separated by intervals of 40 ft.
Through the blue ground itself on each level a series of parallel tunnels about 120 ft.
When the tunnels reach the side of the mine they are opened upwards and sideways so as to form a large chamber, and the overlying mass of blue ground and debris is allowed to settle down and fill up the gallery.
Sea-bathing is insecure, and is confined to a few small coves, approached by tunnels hewn through the rock.
Genoa is remarkably well served with electric tramways, which are found in all the wider streets, and run, often through tunnels, into the suburbs and to the surrounding country on the east as far as Nervi and to Pegli on the west.
A marshalling station costing some £800,000, connected directly with the harbour by tunnels, with 31 m.
Genoa has in the past been somewhat handicapped in the race by the insufficiency of railway communication, which, owing to the mountains which encircle it, is difficult to secure, many tunnels being necessary.
The principal sections of this line were named after the ranges they pierced, the chief tunnels being bored through the Tauern, Karawanken and Wochein hills.
Several of these tunnels are still to be seen.
A case in point is the employment of hydraulic lime in place of Portland cement as grouting outside the cast-iron tubes used for lining tunnels made by the shield system.
Here it projects in irregular bastions and buttresses, there retires into deep recesses and tunnels, but shows everywhere a ruggedness of aspect eminently characteristic. In striking contrast to these precipices are those of the Cambrian red sandstone a few miles to the east.
But the more important works were executed in the 18th century; and of the buildings then explored at a great depth, by means of tunnels, none is visible except the theatre, the orchestra of which lies 85 ft.
The meagreness of the results obtained by the occasional works executed in the last century, and the fact that the investigators were unfortunate enough to strike upon places already explored, gave rise to the opinion that the whole area of the city had been crossed by tunnels in the time of Charles III.
Jersey City and Hoboken are also connected with New York by tunnels under the Hudson river.
The Delaware and Raritan canal 2 was long a very 1 The Pennsylvania railway has constructed tunnels under the Hudson river, and has erected a large terminal station on Manhattan Island.
It is more usual to tunnel under such channels, and the numerous Thames tunnels, the Mersey tunnel between Liverpool and Birkenhead, and the Severn tunnel, the longest in the British Islands (42 m.), on the routes from London to South Wales, and from Bristol to the north of England, are all important.
No shafts or tunnels are necessary except for exploration; the mining consists entirely in open-cut and terrace work.