Masonry students at the Center for Applied Technology North in Severn already have brick laying, concrete mixing and wall building on their resumes. This week, they added reef ball construction.
The Maryland Department of Natural Resources, Chesapeake Bay Foundation and National Harbor have formed a task force to construct and place 80 small concrete reef balls in the Potomac River’s Smoots ...
Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. If you’ve got access to a 3D printer, some concrete, and a few ...
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