Mounds of sand (in front of an abandoned house) for the fence.
Also there were other aggravating factors that made us re-evaluate this [project within a] project.
- The churn out was not fast enough to meet the demand. Because they could only make so much in a day, it was dragging down the pace of construction.
- The weather was also slowing down production. After forming a block, it needs a few good days to cure. But because of the unpredictable weather (on a rainy season), there were days when they needed to halt production.
- The fact that there were only two or three workers in a day was also a problem. Unless they can master the art of multitasking (or grow extra pair of arms), it's impossible to make a block and build a wall at the same time. So switching to one task means they had to stop the other. Now that was really slowing them down.