re: 2 things:-
Hi, Nick.
I noticed this device on previous images with it's interesting fork-like spikes and I have to ask :) if it could give enough heating to loosen up this "concrete", should they encounter it/scoop couldn't get through? It looks like it could come in handy besides doing what it was designed to do. Just a thought.
http://www.nasa.gov/mission_pages/phoenix/multimedia/mh4-tecp.html
