430 
MINUTES OF PROCEEDINGS OF 
Action. Its action is that of a mortar fuze, with the addition of a certain 
increased, violence or intensity of action due to the powder pellet in the 
bottom, when the fuze is left to burn full length. 
The 20-seconds M.L. fuze can be used with the same shells as the 
9-seconds M.L. fuze, i.e. all M.L. shells, rifled or smooth-bore, having 
the general service bush or adapter. It is available for all times of flight 
from 10 to 20 seconds.* and will ultimately supersede the metal 20-seconds 
fuze for naval shell. 
* In spite of the plug a certain acceleration of the rate of burning takes place in rifled shells and 
the mean time of burning of the fuze in rifled shell would probably be about 18 seconds. But the 
fuze would burn its full time in spherical shell. 
