I saw this over at AHF and figured I would post it here. Some great USMC footage on Iwo Jima of assembling a spigot mortar and taking apart mine fuses, among other things.
Tom
Type 98 32cm Spigot Mortar
http://research.archives.gov/description/79039
Navy 20cm rocket and mines
http://research.archives.gov/description/78639
Tom
Type 98 32cm Spigot Mortar
http://research.archives.gov/description/79039
Navy 20cm rocket and mines
http://research.archives.gov/description/78639