Before being placed on the market, electrical, optical and telecommunication cables shall undergo an assessment under the responsibility of their manufacturer. The user of the cable systems is responsible for the correct selection of cables for the safety of the persons using the system.  The article presents the requirements for electrical cables intended for use in underground mines and the scope of tests required during the assessment carried out by ITG KOMAG.

Before being placed on the market, electrical, optical and telecommunication cables shall undergo an assessment under the responsibility of their manufacturer. The user of the cable systems is responsible for the correct selection of cables for the safety of the persons using the system.  The article presents the requirements for electrical cables intended for use in underground mines and the scope of tests required during the assessment carried oThe efficiency of rock cutting with mining machines is largely determined by the arrangement of picks, i.e. the number and their arrangement on the working unit of the mining machine. Not only the correct selection of the pick system for given conditions at the design stage is important, but also ensuring compliance with the design of the finished product. Strives, among others therefore, for robotisation of the process of manufacturing cutting heads/drums. From the point of view of the robotisation of the pick holders welding process, it is necessary to assess in real time the position of the pick holders relative to the side surface of the cutting head body. A convenient way is to use contactless measurement methods based on vision systems. The article presents a method of determining the position of pick holders relative to the side surface of the cutting head body of a roadheader, during their positioning, using a 3D vision system. Data processing was carried out in the Matlab software using the libraries of the Computer Vision Toolbox. A mathematical model describing the transformation of images recorded by cameras has been presented. On the basis of this model, the distribution of distances between the pick holder base points and the side surface of the cutting head was determined for a given pick holder setting. The developed measurement method was tested on an experimental stand built in the Laboratory of robotics of the Department of Mining Mechanization and Robotisation at the Silesian University of Technology.ut by ITG KOMAG.

The concept of portal stacker-reclaimer to be used in the power industry, mainly in the gypsum storehouses for exhaust gases desulphurisation or in the furnace slag storehouses is presented. Apart using the portal stacker for delivery of loose materials to the production line, it can play a role of the initial mixer of loose materials. The stored material can be a mixture of many layers of different chemical composition. Design of the portal stacker is presented and the process of using two-arm portal stacker for unloading the material, which do not require homogenization, is described. The stored materials are taken from both sides of the prism.

The electropneumatic control system dedicated to FS-60 self-cleaning filter designed by KOMAG is presented. Design and principles of operation of the electropneumatic system is discussed. This solution is an alternative to the present pneumatic control system. Advantages and disadvantages of such
a solution are given.