Howdy Greg!
I think it might be fun to find out. Digging it out might be quite the project though.
And it might be rather deep too. A two box detector might even be necessary to locate the thing.
But if it is near surface, yeah, that would overload your machine something fierce.
And that overload would appear to cover a whole bunch of ground too!
So, are you gonna go for it?
Just locating that thing could be a ton of fun. Or several tons, as the case may be.
Wonder if you could get salvage value on that thing?
Blessings,
M-Taliesin