Сборник упражнений по грамматике английского языка. Стрелкова М.С. - 35 стр.

      38. Engine maintenance is sure to play an important role in diesel emis-
sions control in the underground mining.
      39. Brunswick Mining&Smelting company reported $ 61 million to be
spent on underground mobile equipment maintenance, and $ 2,1 million is said
to be spent on the diesel engines themselves.
      40. Diesel engines in underground machinery were said to be more effi-
cient than gasoline engines, reaching 40 % work recovery from the total energy
in the fuel.
      41. This technique is expected to become an industry standard next future
for the borehole measurements of uranium ores.
      42. Uranium ores are found to have significantly less problems for re-
searchers in gamma-ray exploration method.
      43. Designers announced the thermal neutron measurement to be used for
stratigraphic correlation and porosity/moisture studies in the borehole to meet
the needs of the Canadian uranium mining industry.
      44. Quantec company claims some of their newly-developed method to be
suitable in borehole applications for oil and gas exploration.
      45. Looking at the delicate balance of supply and demand in the world’s
nickel market, demand is expected to outstrip supply soon.
      46. Roskill Information Services of the UK has stated the world production
of mined nickel to have increased 12 % in 1995 to 867,000 tonnes in 1994 and
refined nickel production by 9.3 %.
      47. The average cash price for high-grade nickel is expected to increase to
US$9,500 per tonne (US$4.31 per lb) in 1997 as a result of the supply/demand
disbalance.
      48. Factors driving the increased demand for nickel are listed to be growth
in demand for rechargeable nickel-cadmium and nickel-hydride batteries and
applications in the aerospace industry.
      49. Quantec company claims to have developed some new methods which
are suitable in borehole exploration for oil and gas mining.
      50. Probable reserves are estimated to be 3.1 million tones at an average
grade of 13.77 % zinc, 1.5 % copper and 1.40 oz silver and 0.02 oz gold per
tonne.
      51. The 900-tonne-per-day operation is scheduled to produce gold in April,
1997.
      52. Production is expected to hit 80,000 ounces per year.


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