GroundWorks Safety Systems Inc. has invented the Safest, Fastest, Lightest and most Economical to use Trench box in the world ... . Safety is the reason that we invented the new Gravity Lock Trench Box System. There is nothing safer both in and out of the trench. Designed to keep workers out of the line of fire and safe from pinch points during assembly. Set up in less than 15 minutes with 1 machine, 1 operator and 1 worker. The risk to worker is being virtually eliminated while saving in time and money. https://linkin.bio/groundworks_safety_systems read more