Rock dusting of mines; Depositing other protective substances

Full Title

Means or methods for preventing, binding, depositing, or removing dust ; Preventing explosions or fires (dams E21F17/103; applying liquids or other fluent materials to surfaces in general B05) > Rock dusting of mines; Depositing other protective substances

Child Classifications

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• E21F 5/10 Devices for rock dusting
• E21F 5/12 Composition of rock dust