Technical characteristics of Soviet trenching machines are assessed and compared with those of similar machines built in the United States and Europe. The report deals with transverse rotation machines and belt machines, considering rotor speeds and belt speeds, tool speeds, power/weight ratios, power density, traverse speeds, and effective mean cutting pressures. The probable capabilities of Soviet machines for cutting frozen ground are assessed. It is concluded that, while general design characteristics are satisfactory, construction and product development are weak, and performance in frozen ground is not expected to be impressive. (Author)

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