This part of ISO 15236 specifies the performance and constructional requirements applicable to conveyor belts for underground mining having steel cords in the longitudinal direction as reinforcement. The requirements for design and construction apply to the design of single belts as well as the design of complete type series such as those covered in ISO 15236-2. Steel cord belts in accordance with this part of ISO 15236 are intended for use underground in coal mines and in other applications where the highest demands for safety against fire and explosion hazards have to be complied with. NOTE At present the requirements can only be met by the use of compounds based on chloroprene rubber for the covers as well as for the bonding rubber.