does anyone have a good photo or drawing showing the internal construction of the Clam Mk 1 (Metal). I am trying to determine the internal construction. Is the centre explosive container a separate box that is riveted into the outer container or are there two "Dividers" (one at either end) riveted into the outer casing to form the centre explosive container. I haven't been able to find a photo that I can determine one way or the other. thanks for any help you can provide.