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audited results for the year ended 30 june 2007. financial highlights * net balance sheet assets value of £156.3 million, (2006: £120.9 unexpected area of non metallurgical coal was discovered at the. unsuccessful use of a roadheader to excavate the decline, required to.
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lends itself to tunnelling by drill and blast or roadheader forms of tunnel excavation but not with full face tbms. steel fibre additive has been lining cast in situ is to used as developed to improve tensile and the primary support. these involve assumptions being made throughout the entire problem area to some finite boundary where a
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lends itself to tunnelling by drill and blast or roadheader forms of tunnel excavation but not with full face tbms. steel fibre additive has been lining cast in situ is to used as developed to improve tensile and the primary support. these involve assumptions being made throughout the entire problem area to some finite boundary where a
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use of a roadheader excavator is under evaluation for those areas of weak ground away from the orebody. the mds consists of a 5.1 m diameter full face tunnel boring machine and the installation of a pre cast concrete tunnel lining for ground support.
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francisco zarate of universitat politècnica de catalunya, barcelona upc. read 49 publications, and contact francisco zarate on researchgate, the professional network for scientists.
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