F42D1/00	7	Blasting methods or apparatus, e.g. loading or tamping	F42D1/00	F42D1/00		3270
F42D1/02	8	Arranging blasting cartridges to form an assembly (adaptation of blasting cartridges therefor F42B3/02)	F42D1/02	F42D1/02		235
F42D1/04	8	Arrangements for ignition {(ignition systems for shaped charge perforators E21B43/1185; ignition devices for seismic energy generators G01V1/06)}	F42D1/04	F42D1/04		891
F42D1/041	9	{Tools for adapting cartridges for the mounting of detonators (cartridges specially adapted for the mounting of detonators F42B3/26)}	F42D1/04	F42D1/04		20
F42D1/042	9	{Logic explosive circuits, e.g. with explosive diodes}	F42D1/04	F42D1/04		55
F42D1/043	9	{Connectors for detonating cords and ignition tubes, e.g. Nonel tubes (mounting of detonators in blasting cartridges F42B3/26)}	F42D1/04	F42D1/04		431
F42D1/045	9	Arrangements for electric ignition (dynamo-electric generators H02K)	F42D1/045	F42D1/045		865
F42D1/05	10	Electric circuits for blasting	F42D1/05	F42D1/05		937
F42D1/055	11	specially adapted for firing multiple charges with a time delay	F42D1/055	F42D1/055		474
F42D1/06	9	Relative timing of multiple charges ({F42D1/043 and }F42D1/055 take precedence)	F42D1/06	F42D1/06		216
F42D1/08	8	Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor	F42D1/08	F42D1/08		2312
F42D1/10	9	Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure	F42D1/10	F42D1/10		766
F42D1/12	9	Feeding tamping material by pneumatic or hydraulic pressure	F42D1/12	F42D1/12		60
F42D1/14	9	Hand-operated tamping or loading	F42D1/14	F42D1/14		32
F42D1/16	10	Tamping tools	F42D1/16	F42D1/16		31
F42D1/18	9	Plugs for boreholes	F42D1/18	F42D1/18		745
F42D1/20	9	Tamping cartridges, i.e. cartridges containing tamping material (flexible or deformable blasting cartridges F42B3/087)	F42D1/20	F42D1/20		243
F42D1/22	9	Methods for holding or positioning for blasting cartridges or tamping cartridges	F42D1/22	F42D1/22		357
F42D1/24	9	characterised by the tamping material	F42D1/24	F42D1/24		135
F42D1/26	10	Tamping with foaming agents	F42D1/26	F42D1/26		26
F42D1/28	10	Tamping with gelling agents	F42D1/28	F42D1/28		31
F42D3/00	7	Particular applications of blasting techniques {(explosive welding B23K20/08; explosive bolts or actuators F42B3/006; explosive valves F16K13/06; cutting devices actuated by explosion B23D15/145; pyrotechnical actuators F15B15/19; switching devices actuated by explosion H01H39/00)}	F42D3/00	F42D3/00		1161
F42D3/02	8	for demolition of tall structures, e.g. chimney stacks	F42D3/02	F42D3/02		167
F42D3/04	8	for rock blasting	F42D3/04	F42D3/04		4181
F42D3/06	8	for seismic purposes	F42D3/06	F42D3/06		84
F42D5/00	7	Safety arrangements	F42D5/00	F42D5/00		631
F42D5/02	8	Locating undetonated charges	F42D5/02	F42D5/02		98
F42D5/04	8	Rendering explosive charges harmless, e.g. destroying ammunition ({F42B39/14 and F42B39/20 take precedence } ; extracting primers, dismantling ammunition F42B33/04, F42B33/06{; chemical deactivating of explosives C06B21/0091}); Rendering detonation of explosive charges harmless	F42D5/04	F42D5/04		914
F42D5/045	9	Detonation-wave absorbing or damping means	F42D5/045	F42D5/045		1217
F42D5/05	10	Blasting mats	F42D5/05	F42D5/05		166
F42D5/055	9	Silencing means for blasting operations	F42D5/055	F42D5/055		113
F42D5/06	8	Unloading boreholes	F42D5/06	F42D5/06		26
F42D99/00	7	Subject matter not provided for in other groups in this subclass	F42D99/00	F42D99/00		35
