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No. 75 Mk1 / No. 75 MkII / No. 75 MkIII

Length : 184,1mm / 184,1mm / 166,3mm
Width : 88,9mm / 91,5mm / 93,9mm
Height : 63,5mm / 70,1mm / 68,5mm
Weight : 963,7gram / 1020,4gram / 1048,8gram



PRINCIPAL DESIGN FEATURES:

A one‑pint screw‑topped can, 6.5 x 3.625 x 1.875 inches.
The igniter holder is a tinplate shield soldered on one side and formed into two pockets to accept the chemical crush igniters.
A pressure plate is fitted above the igniter pockets. The igniters were based on an acid/chlorate mixture.
CLICK HERE for explanation on the igniters.



1st type pressureplate :



Filling of the Hawkins mine consists of several possibilities.
The following fillings (and markings) were used:

(Red filling band)- Nobel's 673 exploders

(Red filling crosses)- Polar Dynamite exploders

(Pink screw cap)- Burrowite filling

(Pink screw cap / "A"marked on body)- Ammonal filling

Information from Rick Landers' book on UK grenades.



2nd type pressureplate :



The Hawkins mine is filled with explosives, partially wrapped in waxed paper (exploders).
The image on the right shows a piece of that wrapping which came from a deteriorated mine.



Production :

Mark  Date of introduction   Change of pattern  Date obsolete   
1  June 1942    Mar 1946   
2  June 1943  Modified filling, strengthened pressure plate and
igniter pockets set obliquely
 
July 1955    
3  not announced    Dec 1945   
3  Reinstated Mar 1949  Reinstated because there was no other Anti-Tank grenade available for service  July 1955   
3  Nov 1953  Use extended to the Naval service  July 1955