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Updated: April 30, 2025
When the machine reaches the end of the field it is lowered to the track and the screw-jacks are removed. Shoes or skids are then placed upon the track, and the wheels of the turntable are run up on them. This lifts the end wheels clear of the track, so that the car and machine rest entirely upon the turntable.
One of their most daring but successful feats was in altering the foundation level of the city. It was found that the business quarter was laid too low that it was damp, and could not be properly drained. It was determined to raise the whole quarter bodily from six to eight feet higher! And the extraordinary feat was accomplished with the help of screw-jacks, safely and satisfactorily.
The forward end of the car is then again lifted by means of the 3 screw-jacks, and the digging is resumed. The machine cuts a channel from 25 to 35 feet wide, and deposits all the dirt upon one side. If necessary, it can dump earth about 25 feet above the track. The miners follow in the wake of the machine, getting out the phosphate as fast as it is uncovered.
The spare gear of the Haliotis had been unusually complete, and two-and-twenty men, armed with screw-jacks, differential blocks, tackle, vices, and a forge or so, can look Kismet between the eyes without winking. The crew were ordered to replace the holding-down and shaft-bearing bolts, and return the collars of the thrust-block. When they had finished, Mr.
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