Деловой английский язык. Енютина А.А. - 9 стр.

                                       9


work, normally 30–40 % but sometimes up to 60 % of total costs. Sublevel stop-
ing also needs extensive preparation work before production can start.
      Much of this preparation work is done in waste rock, and is an extra cost
that the mining operation just has to accept. Mine layouts are 3-dimensional and
complicated, and must be designed with great accuracy to achieve maximum
mining efficiency. Today computers provide modeling programs that make it
possible to plan accurate layouts for optimal mining efficiency.

                                   Задания

     1. Переведите текст на русский язык.
     2. Ответьте на вопросы к тексту:
     a) What is mine development?
     b) What does the extent and type of development work depend on?
     c) What makes it possible to plan accurate layouts of mine?
     3. Переведите на английский язык следующие предложения:
     a) Многие системы разработки месторождения требуют обширной
подготовительной работы.
     b) Максимальная эффективность разработки месторождения зависит
от точности проекта.
     c) Для более точного планирования горных работ используются ком-
пьютерные моделирующие программы.

                                  TEST № 3

     Прочитайте текст и письменно выполните задания к нему.

                              Ramp excavation

      The introduction of mechanized mining equipment and the need for mobil-
ity created the need for ramps, i.e. the inclined and looped tunnels in mine.
Ramps are built for haulage and transportation purposes or as access routes to
service and maintain equipment. They also usually serve as additional escape
routes in emergencies.
      In shallow ore bodies, the ramp may be the only mine production access,
starting at the surface and consisting of several kilometers of twisting tunnel.