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PART III Regulations Applying to Mines Only
20.Cutting off electricity or making safe where firedamp is found either below ground or at the surface.
21.Approval of certain equipment for use in safety-lamp mines.
22.Means of cutting off electricity to circuits below ground.
26.Introduction of battery-powered locomotives and vehicles into safety-lamp mines.
27.Storage, charging and transfer of electrical storage batteries.
28.Disapplication of section 157 of the Mines and Quarries Act 1954.
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