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Working in extremely hazardous conditions and facing a long history of death, Sandhogs toil underneath the streets just as they have for the past 150 years.

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A roadheader, also called a boom-type roadheader, road header machine, road header or just header machine, is a piece of excavating equipment consisting of a boom-mounted cutting head, a loading device usually involving a conveyor, and a crawler travellin

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eLCOSH : Encyclopedia of Occupational Safety & Health

Summary Statement . A comprehensive overview of health and safety in construction worldwide, including trades, typical hazards, methods of prevention, regulations, management structure, and major sectors.

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Dirty Jobs is a program on the Discovery Channel, produced by Pilgrim Films & Television, in which host Mike Rowe is shown performing difficult, strange, disgusting, or messy occupational duties alongside the typical employees.

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As a global driving force in mechanized tunnelling technology, Herrenknecht develops state-of-the-art technical solutions for the construction of underground infrastructures of all kinds.

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The MT720 series of tunneling roadheader from Sandvik consists of an optimized operation field for mechanical tunneling work in tough and grinding rock formations.

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constantly challenged due to the need for a mobile hard rock excavator in the industry. A brief background of methods for roadheader performance prediction Sandbak (1985) and Douglas (1985) used a rock classification system to explain the changes of roadh

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