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32. Определите, какой частью речи являются выделенные слова. Пере­ ведите предложения: ,

  1. There exist various types of electric drills which are in use in rocks of different hardness.

  2. To increase drilling speed, modern drill bits (коронка) are covered with hard allpy (сплав).

  3. Using electric rotative drills it is possible to drill holes into coal and soft rock such as soft shales.

  4. The Donbas cutter-loader wins and loads coal of low-to- medium hardness and anthracites in gently sloping seams under a roof of average strength.

  5. Scraper conveyers can convey great loads per hour.

  6. As a measure of safety the shields protect face personnel and equipment from falling rock.

  7. For the measurement of the pressure and speed of air there are special barometers which measure the absolute pressure of air.

  8. The drills for making holes have handles.

  9. It is rather difficult to handle the equipment underground.

33. Заполните пропуски в предложениях, используя следующие предлоги:

instead of because of by means of due to according to (in accordance with)

  1. The rapid and much more accurate identification of new reserves and the ability to establish their quality, faulting, folding, mode of occurrence, etc. have become possible ... the reliability of new geological information.

  2. In the most promising coal-producing areas the rail and road transport systems are used ... the complicated geological conditions.

  3. Steel supports are widely used now ... timber supports.

  4. Wheel scrapers are earth-moving units which are pulled ... a

Unit 9 233

drawbar (тяговый крюк) on the tractor, and its digging -is controlled by the tractor.

5. Scrapers find wide application ... their high degree of mobility, high production rates, and their limited requirements for auxiliary support equipment.

34. Употребите данные в скобках глаголы в соответствующей форме:

to carry out, to continue, to work, to develop, to create, to apply, to plan, to perform, to calculate, to work out

l.The mechanization and automation of underground processes (будет проводиться) on the basis of a wider use of winning complexes, powered roof supports, remote and automatic control and other modern equipment.

  1. For this very purpose different cutter-loaders, winning complexes, loaders, pumps, fans, equipment for setting supports, etc. (создаются).

  2. Now a wider use of conveyer belts for level and inclined workings and other means of automation (планируется).

  3. Ore deposits (разрабатываются) by the underground and open-cast methods.

  4. Automated systems of planning and control (применяются) in the mining industry.

  5. Automated systems of planning and control (подсчитыва­ ют) wages, efficiency and (производят) other engineering calculations.

35. Переведите предложения, используя следующие разговорные фор­ мулы:

to take part In; to solve important problems; to keep in close touch with; to make a contribution (to); to take into consideration (to take into account); to design; reliable winning complex

  1. Научно-исследовательские институты поддерживают тесную связь с шахтами и карьерами.

  2. Ученые и инженеры принимают активное участие в проектировании и создании надежных добычных комплексов, мощных экскаваторов и драг­ лайнов, различных насосов и бурового оборудования.

  3. Кроме того, они решают важные проблемы, связанные с современ­ ными способами транспортировки полезного ископаемого на поверхности, принимая во внимание геологические условия месторождения.

  4. Русские ученые внесли большой вклад в разработку методов добычи полезных ископаемых.

36. Суммируйте содержание текста Б по следующему плану: 1. The importance of working economic minerals.

234 Unit 9

  1. The main factors to be considered in choosing the methods of working ore deposits.

  2. Mine development work.

  3. Different types of equipment used in working ore deposits.

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