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KAMY is the worldwide leader in manufacturing hydraulic cutters, road headers, tunnel support systems, and other specialized machinery used in the tunneling, mining, and construction industries. Through KAMY’s years of experience and innovative thinking, we can provide custom engineered solutions for nearly any project requiring rock excavation or concrete demolition.

KAMY is the leading manufacturer of roadheaders in the weight class of 13-80 tons weight. Our roadheaders offer interchangeable cutter heads, both transverse and axial and are custom engraved for each project. Our hydraulic cutters are suitable for material with uniaxial compressive strength ranging from 500 to 25,000 pounds per square inch. All of our products can be utilized in a variety of applications from rock excavation, trenching, demolition and concrete, to underwater cutting, tunneling, and scaling.

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Coal mining boring machine, part of display at Big Pit mining museum, Blaenavon, Wales, UK. ... produced by Hardy Patent Pick Co, works in Sheffield. Date: 1890s.

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and 70's in other underground mining operations (including coal mining in England). The penetration rates achieved by the machine in most of these projects were far above the capabilities of any drill and blast operation, yet overall tunneling costs could

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Accurate performance prediction is one of the main concerns in determining the construction time of mechanical excavators such as tunnel boring machines (TBM). A good overview of well-known TBM performance prediction models was published by Farrokh et al.

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Instrumentation of a Tunnel Boring Machine

2 Figure 1 TBM entering the main line tunnel TBM The TBM was built by the Robbins Company in 1980 with a diameter of 18 ft, 6 in and rebuilt by Kenny for the present job.

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