Tom,
RONCO's dogs are very expensive, say 15 grand or more. They get dogs at a premium like the USAF as they often buy as many as 50 at a time and we only have 7 at any given time in country. Our dogs are mostly shepherds and trained locally for Explosive Detection (Dogs) (EDD). At least 5 to 7 different types of explosives must be detected, or back to square one and a new dog.

The robot simply permits us some distance with IEDs. Normally we don't use the robot on cleared military ordnance, as one "high order" detonation together with fragaments would destroy the robot.

We typically clear with Vallon detectors and MB4 data recorders. No more signal sweeping, which would drive you nuts in under an hour. That is, the VMH-2 with a larger search head and data recorder means we can "silently" sweep 50 square meters in under an hour and download the targets. From there the "privates" begin to dig

Most of the ordnance is WWII era and some WWI. The German stuff looks like new even after 40 years underground. The Russian stuff (ahem) also looks like the day it was made...horrible, rusty and unlikely to go even with a shape charge

That said, if it's German and the projectile already went down range once (the ogive and obturating band shows rifling) we would most likely destroy in place. If the fuse looks like it will gently come off, we dawn an EOD 8 or 9 and unscrew the fuse. Most of the time, the lead or senior with the response team gets to decide and nobody, not even the police argue. A 50-gram shape charge means 60 to 70 meters stand off distance and low order (breaks in two or three pieces and one hell of a bang). Trouble with the German stuff, the projectile walls are thick and the rounds back then, 170mm carried 11 kgs of high grade Comp B (similar to the USA). Our copper shape charges have in the past bounced off. You already know, without a secondary explosion, the charge went elsewhere and do again.

I have thousands of jpegs, and we often work with ATF and FBI when we find stuff. Sometimes they help and sometimes we help.

Regards, Stan