CPC Subgroup
F42D 1/18 Plugs for boreholes
Full Title
Blasting methods or apparatus, e.g. loading or tamping > Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor > Plugs for boreholes
F42D 1/18 Blasting methods or apparatus, e.g. loading or tamping > Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor > Plugs for boreholes