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banksman
signaleur
Última atualização: 2012-10-22
Frequência de uso: 1
Qualidade:
slinger banksman
slinger banksman
Última atualização: 2023-10-13
Frequência de uso: 1
Qualidade:
the equipment includes a communication system providing data and speech channels between the cage, banksman and winding house.
il n'y a pas eu d'erreur de comptage, mais quelques difficultés mécaniques dans la transmission des données et dans le système d'alimentation.
when the banksman received no news of the five men he asked a deputy who was below ground to inves tigate. the latter heard cries for help and gave the alarm at 18.30 hours.
le préposé au jour n'ayant pas de nouvelles des cinq hommes demanda à un porion se trouvant au fond d'aller voir, ce dernier entendit des appels au"secours" et donna l'alarme à 18.30 hrs.
in the shaft, tests have been carried out at many british collieries and at every one it has proved possible to communicate consistently over the full depth of the shafts, the deepest being about 1 km; in each case, reliable signals have also been exchanged between personnel travelling in the cage and both banksman's and onsetter's positions.
comme dit précédemment, la station f est reliée, non pas à une antenne classique, mais à la ligne de transmission tl. celleci peut prendre différentes formes, mais en général ce sera, soit une ligne bifilaire à courants antiparallèles, soit un câble coaxial.