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Mine

Hi Akon!
Indeed - quite unexpected finding!

Here some doc from Henry Belot's Deminest, about the British air drooped A MkV (the Mk I-IV had similar shape with variations in dimensions, in the parachute installation system - when used , in the type of fuzing and in the eventual use of a tubular stabilizer)

Mine A MkV.gif
 
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I am looking for details about the initiation device and also the exact configuration inside the mine ...but so far I have nothing at all.I have only found some links to archival sources such as:

Efficency of mines A type H and A Mk 5 in inland waterways of Western Europe. ​

Characteristics of German (?) mine units A Mk 5 and AP Mk 1. ​

Actuation of Z circuit in mines A Mks 1 to 5 by sweeping pulse of rectangular form.​

https://discovery.nationalarchives.gov.uk/details/r/C594520
I have no document, I only know of its existence ---

Any input on the initiation device is welcome.
Thank you.
Snímek obrazovky z 2026-08-08 12-07-43.png
Akon
PS:
Basic statement: the mine had an induction initiator or a sound initiator (both are so-called single-channel initiation mechanisms)Then, through development, another option was for the mine to be equipped with a two-channel ignition, i.e. induction and sound. (mine type "A", "Mk.V)
The last option was a reaction to German mine clearance work... when mines were to be artificially brought to an explosion by artificially exciting the magnetism, for example, with an induction coil when acting on the initiator....I don't know yet how they imitated the sound. If there is no sound and induction, the two-channel initiator will not give an initiation stimulus.
 
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Akon Hi!
I tried to upload the fallowing document in the upload section but it keeps saying that it is too large (though only 5.3 MB)
This document summarizes the data gathered by the Germans on the British naval and fluvial air dropped mines, including their fuzing:
D (Luft) g.4921 Fremde Flugzeugminen, Beschreibung, Wirkungsweise und Anleitung zum Bergen
In the meantime I have uploaded it on my private mediafire site - It will remain available for download for a week:
Here's the link
www.mediafire.com

D (Luft) g.4921 Fremde Flugzeugminen, Beschreibung, Wirkungsweise und Anleitung zum Bergen

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.
www.mediafire.com
 
Hi Dreamk
Thank you very much for passing on the D (Luft) g.4921 :)
I finally downloaded it from Invenium (I found it by the name of the regulation from you)
So when I study it, the regulation covers, let's say, the induction initiator .... It is information until the fall of 1941 (inclusive) then there is a supplement / correction a little later. The later 1943-1944 was not published.

It is clear that the sources of that time will be the German agents in England .... already according to the preserved material (nothing damaged and everything intact)
What it does not cover: are the other initiators (for sound) and not at all the two-channel one, I would like to know more about that .....
- among other things, my experience with uploading a file (pdf ; djvu) to the Download section is the same - it didn't work (file 2MB) I won't waste time on it... 2 attempts and result 0 means don't waste time.
Akon
 
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