Bits of broken timberinglay at the foot of the shaft.
To go moling into such a place without timbering would be a dangerous business, but the crisis was one that justified any risk.
He sings out to Tony and asks if the timberingwas all right; and the lazy rascal said 'twas.
The timbering of the lower part of the shaft didn't suit Mr. Havens and he told Tony to put in new cross-braces and some new planks.
Somebody has pried out some of the timbering and caused a cave-in.
You knew when I asked you if the timbering was secure that you had not wedged your cross-beams.
Just as soon as you can get to it from our end, build a bulkhead of heavy timbering across this hole.
The old method of "timbering in square sets" had been used in the Crayton claim, and the square cribs, filled with waste rock, upheld the roof of these workings.
He just naturally lied about that timbering being all right.
About the only thing we understand about timbering operations is the log drive in the spring.
Loose rock, although more readily removed, necessitates strong timbering to prevent large masses breaking away and falling into the tunnel.
Heavy timbering might be sufficient for mere temporary purposes, but substantial masonry or brickwork side walls and arching became necessary for permanent work in those portions where the tunnel required artificial support.
The timbering of the sides and roof through this description of working is very tedious, and attended also with a considerable amount of risk.
The rock near the shaft contained many wet rusty seams, and settlement was detected in the segmental tunnel timbering soon after the widening of the heading was completed.
The steam shovels were supplemented by two Browning, 15-ton, locomotive cranes, which handled the spoil in places where timbering interfered with the operation of the shovels.
The support of thetimbering in the headings was then transferred to the girders by additional posts.
The settlement of the tunnel timberingwas checked for a time, and the bench was excavated as shown on Plate LXI.
In this stretch the north ends of these cross-cuts were connected by a second heading, and wall-plates and sets of three-segment arch timbering were set up to support the roof of the drifts.
Many of these places required timbering, and no timbering was elsewhere necessary except at the portals.
The rock in this shaft was seamy and not quite as hard or dry as that in 33d Street, and timbering was required for practically the full depth to the crown of the drift.
His carelessness of his own life, that led him to slap his timbering up any way, was born of that same fury.
That meant six hundred feet of tunnel at the best, unless fortune was much kinder than she had hinted at before--quite an undertaking for one man, considering the timbering and all.
The conjectural painting shows settlers carrying out timberingactivities at Jamestown.
Seventeenth Century Timbering and Building The 1685 engraving shows activities relating to timbering and house building.
There are those still living who remember this contrivance; but the space has long been filled in, and the sole vestige of it is an unobtrusive wooden sill resting on the timbering beneath the swinging sign.
The square system of mine timbering as used in this country in the Pacific coast mines and now introduced into Australia.
Opinions have been expressed that this system of timbering is not secure, and that pressure from above would bring the whole structure down in ruins.
They seemed low and hot to me, and above one was the ceiled roof, all unlike the high open timbering of our halls, where the smoke curls, and the birds are as free to perch on the timbers as they were in the oaks whence they were cut.
Into the crowd of men who worked the heavy javelins fell, and through the timbering the reddened spears went and came, driving at last the foe to safer distance.
Timbering becomes a real problem, there, for the longer a prop is, Anton, the weaker it is.
The timbering gangs had a desperate job to do, for there was no solid flat roof overhead under which props could be put, nor could enough time be given to build a stable timber roof.
The mine is threatened with inundation, which can be prevented only by the use of powerful pumping machinery; the rock is unusually broken up and faulty, which necessitates expensive timbering and impedes the work.
He's straight; a smart manager underground, good at timbering and getting ore out; but that's as far as he goes.
Where no timberingwas required, several different methods were used in drilling and excavating the solid rock, though in all cases a center top heading was driven.
A side heading was driven at the level of the springing line until a point was reached where the roof was self-supporting, and the timbering was brought out to the face of the portal from that point.
Station 323, where the regular segmental timbering at the tunnel commenced.
The timbering of the broken-down portion of the tunnel just behind the shaft had been repaired, and Harry flipped the sweat away from his broad forehead with an action of relief.
A pumpman had picked up a piece of heavy timbering and thrown it at him in mock ferocity.
While the timbering commonly remained in place in mines, it would be followed up by permanent masonry arching and lining in tunnel work.
The pressure exerted upon tunnels of large area was countered during construction by timbering systems of greater elaboration, evolved from the basic one.
I'm timbering my shots to keep from breaking the sky.
Terminal Station, and under Tenth Avenue, were driven from the Terminal Station-West, and the timbering had to be made very secure on account of the pipes and sewers in the street above.
The general way in which this timbering was carried out will be described under the head of "Timbering.
Heavy timbering was used, as the rock cover was only about 6 ft.
If necessary, a few lengths of segmental timbering were put in before taking down the bench, which was generally kept some 40 or 50 ft.
The wall-plates were laid in these, the roof was taken out in short lengths, and segmental timbering spanning from wall-plate to wall-plate was put in.
The more piles in the face the less timbering was done.
The two entirely separate tunnels gave a cross-section which was much more easily timbered than the wide flat span at Manhattan, and the segmental timbering was amply strong without posts or other reinforcement.
The distance excavated beyond the neat line, because of the very heavy timbering necessary, was about 2.
The number of types and the obstructions caused by the heavy posting of the timbering made it inadvisable to use built-up traveling forms at the Manhattan side, though they were used in the Weehawken Rock Tunnels.
Little or no timbering was needed, there were no buildings above the tunnel to be taken care of, and large charges of powder could be used.
This core was gradually removed, and timbering supporting the rock above the middle wall was put in as excavation went on.
A typical day's working force for drilling, blasting, mucking, and timbering is shown in Table 11.
As the amount of soft ground in the face increased, the system of timbering was gradually changed to one of 2-in.
