1/6 This is a really nice pic showing what "double-sided loading" means. Single-sided loading implies there is only room to reverse one truck in next to the shovel. What it implies is that the second truck will be filled faster than it otherwise would have been, not having to
2/6 wait off to one side for the 1st truck to be loaded and pull away, then reverse into position. You might not think the 30 seconds or so in lost time is that much until you sit down and do the calculation (see below). Of course, this assumes each truck is always going to save 
3/6 30 seconds on every trip because it would always be waiting for another truck at the shovel. Another solution would be to ensure you have enough shovels so that no truck would ever find itself waiting (ideal) but then you are not being capital efficient on the shovel side
4/6 either - having too many shovels is also expensive. Another big assumption is that the cycle time is always fixed for a whole year - it never is. But the concept here is what is important: Double-sided loading makes a material difference to the productivity of your fleet.
5/6 Secondly if you can find a way to shave off seconds on your truck cycle you can save millions. Simply put, a mining truck fleet is like a conveyor belt. The truck fleet has to minimize standing time or the conveyor is not moving material. Finally, ensure the pit designs and
6/6 ST & LT planning accommodates for double sided loading, which for a 789 means your push-backs should be at least 120m wide to accommodate a production blast and a trim blast to final limit. Another topic for another time.
