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Surface mining method enormously affects the environment in terms of fugitive dust emission than underground mining method. High mechanization in mining operations leads to add heavy load of dust to the surrounding area. Dust not only deteriorates the environmental air quality in and around the mining site but also creates serious health hazards. During coal mining activities, large quantities of coal dust, ashes, polycyclic aromatic hydrocarbons, and heavy metals are released into the environment, forming a compl...

Belt conveyors constitute an important part of the machinery for the underground and surface mining of materials. In the course of time, conveyor belts proved to be the most efficient way of transporting material, which is still valid not only in the mining industry. For the transport of rocks to a mine disposal site, a combination of multiple belt conveyors is necessary. Places of transfer belong to the most stressed parts and there are frequent breakdowns. They operate in difficult conditions and are subject to ...

The fixture of optical elements in optomechanical assemblies is a field that develops depending on ever-increasing demands on optical systems, namely on their performance, the accuracy of the fit for the lenses, on the installation space, the resistance of the assemblies, etc. Equally important is the view in terms of the production demand for such a system, which is also growing. The article presented here deals with a theoretical understanding of the issues concerning the free bonding of lenses, i.e. fitting the...

Conveyor belts are used for conveying both loose and lump materials in surface mines. During their transport, especially in the places of pouring these materials, where the material is crushed due to a large impact height, a large amount of dust is generated. This makes problems in the actual operation due to fire or explosion hazards, and also by fouling up the vicinity of conveyor belts and transfer points. The resulting dust also poses a threat to the health of operators. Most of the resulting dust accumulates ...

The aim of this article is to describe the possibility of increasing the service life of the rod eye on a tilting platform that is used to tilt heavy barrels between the two differences in heights in transport lines. This mode of transport was selected for the lack of space in a given area of a production line, which does not allow the implementation of an inclined plane, which would be structurally easier. Rotating those barrels by 90пїЅ that is achieved during this way of transport, is desired for subsequent tec...