This week I finished installing a pathway that was 170 feet long, with split basalt. 7.5 tons; or 15,000 pounds. Once finished, and a bit worn feeling, a thought came to mind that I had not considered before - the amount of weight handled. Generally, I'll take each stone and rotate it in one to 5 positions per side, to find the best fit. Flipping it to see which side works best and looks best. Many stones are handled 7 or 8 times apiece, when they don't quite fit a spot and are set aside for another spot. My estimation, is that the equivilent of 100,000 lbs of stone is handled when placing 15,000 lbs of flagstone. And that's after the workers moved that 7.5 tons along the path. Along with the sand and gravel and weight of soil removed. it's amazing how much weight and lifting occurs on projects like this.