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Avis d'intention

Vault Ventilators and Vault Ventilating Ports

1.1 These requirements cover emergency vault ventilators and vault-ventilating ports. 1.2 Emergency vault ventilators are primarily intended to provide fresh air to persons locked in the vault by accident or during a robbery...
Avis d'intention

Dispositifs descenseurs

This International Standard specifies requirements, test methods, marking and information to be supplied by the manufacturer for descending devices. It also specifies some basic requirements for the descent lines to be used...
Avis d'intention

Câbles d'alimentation des mines

1.1 This Standard specifies construction and testing requirements for unarmoured mine power feeder cables normally used for power distribution in stationary or semi-stationary applications covered by CSA M421 and the Canadian...

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