this report describes the development and design of a pilot- scale boring machine with a 1 m diameter head for rock cutting research. the machine has three main uses (1) the testing of a small number of full-size rock cutting tools, (ii) the study of 1/4 to 1/8 scaled model of large arrays of cutting tools and (iii) the development and proving of instrumentation. the cutting head is mounted on a hydraulic motor driven by a variable output pump powered by a 44kw electric motor. these units and the control gear are assembled on a chassis running on rails. instrumentation to record thrust, torque and rate of advance has been provided. (a)

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