Size the trench so there's enough room for the retaining wall block and at least 8 in. of space behind it. Excavate deep ...

An autonomous robot with a large gripper can transform a pile of boulders into huge stone walls without mortar – learning on its own how to place each irregularly-shaped stone as the next building ...

“The Stones. I love the Stones. I watch them whenever I can. Fred, Barney ...” ­­— Comic Steven Wright I like the Stones, too. And the Beatles and The Who and, at least some of the time, Pink Floyd ...

Originally built as barriers between fields and farms, the region’s abandoned farmstead walls have since become the binding threads of its cultural fabric Robert Thorson - Professor of Earth Sciences ...