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http://www.ctlgroup.com/latest-thinking/press-releases/ctlgroup-team-wins-award-at-nasa-building-challenge/

www.ctlgroup.com NASA and the National Additive Manufacturing Innovation Institute (America Makes) announced in May a new $2.25 million competition to design and build a 3D printed habitat for deep space exploration, including the agency’s journey to Mars. The initial phase of the design competition called on partic…

ASTM Field Density - Sand Cone