A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods.
Solving a problem a customer experienced when drilling in abrasive rock conditions has led to a groundbreaking new design for drill bits. The resulting Sandvik top centre drill bits, which incorporate the largest upgrade to face drilling bits in decades, are now available as standard products in three sizes.
1 Hour Ago. NEW YORK— Can a machine that dispenses water for free also turn into a cash stream for Coca-Cola? For now, Coca-Cola is testing just one "Dasani Purefill" machine on the campus of Georgia Tech, across the street from its headquarters in Atlanta.