Ignoramus30559 wrote:
Steve B made me recall something.

I watched the Gold Rush series made by Discovery channel.

(...)

I personally think that they were lucky
not to suffer any injury or worse, given how they had to work,
operator fatigue, uneven terrain etc.

...Becoming a Grizzly Snack...
http://www.huffingtonpost.com/2012/03/06/john-wallace-yellowstone-bear-attack_n_1322533.html

I think there is a market for an ATV radar to
determine the real contour of features below
ground. It would be cool to bore a small hole
and drop in a device capable of generating a
3D point cloud showing the density of material
in the vicinity.

Working blind is rarely productive.

--Winston