The first underground system was proposed by Charles Pearson in 1843. Twenty years later the first line of the London Underground was opened for traffic. In the early days, the trains were driven by steam locomotives, which burnt coal, filling the tunnels with smoke. It is said that the train staff and porters asked for a permission to grow beards and moustaches – as an early form of smog mask. The tunnels of the first underground were made as small as possible in order to reduce the construction costs. According to Pearson’s project, all lines were laid down close to the ground surface. The first escalator was also installed in theLondon Underground in 1911. The railways were prepared for any emergency that might occur. To minimize the danger of flooding the underground near the Thames, isolating doors were built in the tunnels. All the trains were equipped with special reduced lighting for using on open sections of track.
Veselova
30.06.2020
1. it snow steadily the whole week and it still of snow. 2» we to climb for six hours already, but we are not reach the top of the mountain yet. 3. the pain already go but the child still cry, 4. the workers work very hard these two weeks, they were busy with the interior decoration of the house» 5. he to solve the crossword puzzle for an hour and he sa he was about to solve it as he thinked over the last word о 6. he worked at the language all the time and made great progress. his pronunciation was rather good, only a slight accent remain. 7„ не finished the first part of his book and now he wrote the second. he worked at his book for two years, 8. dusliri hoffman, who played the hero, given a fine performance. 9. why your hair were wet? you swim? 10, doctors and scientists show recently the benefit of fish in the diet