Abstract: The present invention provides device system and a method for monitoring movements of mining conveyances in a mine shaft. One or more sensors that form part of the system may be installed directly on the mining conveyances. The sensors may be accelerometers and are for detecting movements on mining conveyances. The system may analyze the descent and ascent paths of the mining conveyances on guides by recording vertical, horizontal and transverse accelerations. The analysis may comprise associating the movements with position of the mining conveyances on the guides for identification of an anomaly at a specific position.

Abstract: The present invention provides device system and a method for monitoring movements of mining conveyances in a mine shaft. One or more sensors that form part of the system may be installed directly on the mining conveyances. The sensors may be accelerometers and are for detecting movements on mining conveyances. The system may analyze the descent and ascent paths of the mining conveyances on guides by recording vertical, horizontal and transverse accelerations. The analysis may comprise associating the movements with position of the mining conveyances on the guides for identification of an anomaly at a specific position.

Abstract: A haybale unloader is disclosed for transporting and unwinding cylindrical bales of hay or like material. The invention provides a compact, self-powered and self-propelling unloader for unrolling a continuous sheet of agricultural material from a bale. The unloader allows for convenient transport of bales and is easily operated by a single person. The unloader comprises a wheeled frame on which are disposed a support surface for a bale and a conveyor having a forward discharge end and rearward receiving end. A limiting surface is disposed adjacent the receiving end of the conveyor and extends upwardly therefrom in an obtuse angle relationship thereto. A pair of freely pivoting bale retaining arms is provided for rotatably retaining the bale against the support surface and limiting surface.