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PRO-HITRA is a software package which can be used by designers of hydraulic transportation systems, and by manufacturers and users of pumps. The software includes a choice between three calculation methodologies: the Durand, Juffin and Yugoslav methods. The program is divided into three parts: loading and processing of input data, calculation of the pump according to the chosen methodology and selection of the pump from the catalogue of the chosen producer. Input data required are the characteristics of the minerals and hydromixtures, and the pipeline and its profile., PRO-HITRA is a software package which can be used by designers of hydraulic transportation systems, and by manufacturers and users of pumps. The software includes a choice between three calculation methodologies: the Durand, Juffin and Yugoslav methods. The program is divided into three parts: loading and processing of input data, calculation of the pump according to the chosen methodology and selection of the pump from the catalogue of the chosen producer. Input data required are the characteristics of the minerals and hydromixtures, and the pipeline and its profile.

The calculation and analysis of ventilation system parameters can be achieved by the SimVent numerical package but a full understanding of the results requires the involvement of an experienced specialist. A solution to this problem has been the creation of the hybrid system INVENTS, whose knowledge base represents a formalisation of expert knowledge in the mine ventilation field. The design methodology of the INVENTS system is presented along with the system structure and user interface. Its use is illustrated with field data from the Soko coal mine in Serbia, The calculation and analysis of ventilation system parameters can be achieved by the SimVent numerical package but a full understanding of the results requires the involvement of an experienced specialist. A solution to this problem has been the creation of the hybrid system INVENTS, whose knowledge base represents a formalisation of expert knowledge in the mine ventilation field. The design methodology of the INVENTS system is presented along with the system structure and user interface. Its use is illustrated with field data from the Soko coal mine in Serbia

Problems relating to mine ventilation system analysis involve the estimation of numerous independent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution of these problems relies on numerical methods, which have been incorporated in software packages such as SimVent. Discussion is presented of an upgrading of this software to produce VENTEX, a coupled expert system incorporating both procedural and declarative knowledge that offers the possibility of a more profound exploitation of the available software at an expert level. The VENTEX system is illustrated using the evaluation of the general ventilation state of the Soko brown coal mine in Serbia., Problems relating to mine ventilation system analysis involve the estimation of numerous independent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution of these problems relies on numerical methods, which have been incorporated in software packages such as SimVent. Discussion is presented of an upgrading of this software to produce VENTEX, a coupled expert system incorporating both procedural and declarative knowledge that offers the possibility of a more profound exploitation of the available software at an expert level. The VENTEX system is illustrated using the evaluation of the general ventilation state of the Soko brown coal mine in Serbia.

A hierarchical decomposition greatly assists in solving the complex problem of evaluating the general ventilation state of a mine. This approach has been used to develop an expert system for analysis and evaluation of the ventilation state, by upgrading an existing numerical package, SimVent, with declarative knowledge representing the rules and heuristics which mine ventilation experts use. The system is implemented in the KAPPA-PC expert system shell, a Microsoft Windows application which provides a wide range of tools for constructing complex applications with graphical interfaces and for object-oriented programming. The general ventilation state of the Soko lignite mine, in Serbia, was evaluated using the system, which characterised it as bad and made suggestions for improving the air loss from the ventilation network., A hierarchical decomposition greatly assists in solving the complex problem of evaluating the general ventilation state of a mine. This approach has been used to develop an expert system for analysis and evaluation of the ventilation state, by upgrading an existing numerical package, SimVent, with declarative knowledge representing the rules and heuristics which mine ventilation experts use. The system is implemented in the KAPPA-PC expert system shell, a Microsoft Windows application which provides a wide range of tools for constructing complex applications with graphical interfaces and for object-oriented programming. The general ventilation state of the Soko lignite mine, in Serbia, was evaluated using the system, which characterised it as bad and made suggestions for improving the air loss from the ventilation network.

The use of horizontal cut and fill with hydraulic stowing is described., The use of horizontal cut and fill with hydraulic stowing is described.