MR MCBRIDE
Yes, Sir, it's just very simple.  You have different lengths of timing set on it, in other words it's a thicker red plate.  That exhibit my attorney showed me would indicate the different colours and how long it is.  For example, the thicker the lead plate, the longer it takes for the high tensile steel wire to cut through it before detonation.  So you would have, the thicker one takes longer, a thinner one goes quicker.  And they are colour coded and the colours are then directly related to the time limits, time ranges.  Like yellow, I think it's between 5 and 15, if I can remember correctly, green is between 20 and 30 and I think red is between 30 and 40, something like that.  Minutes I'm talking about, yes.