Apparatus for signalization in mines; Explosive mine counter-measure apparatus; Scientific, research, navigation, surveying, photographic, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable media, computer software, blank digital or analogue recording and storage media; calculating devices; computers and computer peripheral device; Computer hardware and software systems for control and automaton and telemetry for mining equipment.