During the Spanish Civil War, the Republican war industries in Cataluna produced diofferent modles of bombs: 12kg, 70kg, 250kg ad 500kg.
The 70kg sample at the Air Museum in Madrid has been the objet of a thorough study in the excellent site "amonio.es" at https://amonio.es/bomba_catalana_70 kg.htm


However the issue is not so simple - not to say frankly that its is quite puzzling.
1) Recently found documents, originally published by the Republican war industries in Cataluna show a quite different 70kg bomb (drawing and photograph). They also indicate that thus bomb ws produced by the well-known Elizalde ompany.


2) The bomb in display in the museum seems to be a reduced size version of the 250kg bomb, produced by these same industries.
3) This bomb has also a unique feature, that has not yet been discussed at this stage: folding fins !

The subject of teh development of folding fins for bombs has already been the object of a thread in this forum. I'll reopen it in a couple of days to upload some new documents I recently received on the subject.
The question is "are we speaking of 2 different models of 70kg bombs produced by the Republican war industries in Cataluna" or were they produced in different areas of Spain by aother industries.
BTW another 70kg bomb, quite original and of different shape was produced by the Talleres de Guernica in the Basque "Zona Norte" (see its study here https://amonio.es/bomba_guernica_RA_7.htm)
The 70kg sample at the Air Museum in Madrid has been the objet of a thorough study in the excellent site "amonio.es" at https://amonio.es/bomba_catalana_70 kg.htm


However the issue is not so simple - not to say frankly that its is quite puzzling.
1) Recently found documents, originally published by the Republican war industries in Cataluna show a quite different 70kg bomb (drawing and photograph). They also indicate that thus bomb ws produced by the well-known Elizalde ompany.


2) The bomb in display in the museum seems to be a reduced size version of the 250kg bomb, produced by these same industries.
3) This bomb has also a unique feature, that has not yet been discussed at this stage: folding fins !

The subject of teh development of folding fins for bombs has already been the object of a thread in this forum. I'll reopen it in a couple of days to upload some new documents I recently received on the subject.
The question is "are we speaking of 2 different models of 70kg bombs produced by the Republican war industries in Cataluna" or were they produced in different areas of Spain by aother industries.
BTW another 70kg bomb, quite original and of different shape was produced by the Talleres de Guernica in the Basque "Zona Norte" (see its study here https://amonio.es/bomba_guernica_RA_7.htm)