Geopractica provides geotechnical consulting services throughout the engineering industry for Mine infrastructure development, Oil and Gas related developments, Commercial developments, Rail, Roads and Earthworks, Dams, Bridges and Harbour developments.
GMC Company Globalization & Localization. GMC is dedicated to the promotion of the localization strategy and has constantly improved the service efficiency through localization of both service and human force and has built branches and offices in 22 countries and regions one by one.
A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the face.
A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated.
Hurriers were as vital to the operation of a colliery as were the colliers. They were invariably children or women and as in textiles and many other trades in the industrial revolution, coal mining could not have developed without the exploitation of this source of labour power.
Pit Terminology - Glossary. Glossary of words that are generally specific to the mining industry: Some have a two or three fold meaning, some have gone out of use, some are local to Derbyshire, Leicestershire, South Yorkshire and to Nottinghamshire, and others are general to the British Coalfields.
Our Products. The building aggregates equipment of CBcrusher includes not only a series of single equipment of coarse crushing, intermediate and fine crushing, sand making and shaping, but also a batch of standardized design products of production line on the basis of many years of experience.
About Our Industry. As one of leaders of global crushing and grinding industry, We always seeks innovation & excellence. Grasping strong production capability, advanced research strength and excellent service, We create the value and bring values to all of customers.