It's not just the feeling of a modern-day gold rush, it's more likely. Loading is the work load that is allocated to a work centre. For example, time might be lost while changing over from making one ingredient of another. If the machine in time breaks down, it will not be available. If there is machine reliability data available, this also needs to be taken into account. Sometimes the equipment could possibly be awaiting parts to reach or be 'idling' for a few other reason. Other losses could include an allowance for the device being run below its optimum speed as well as an allowance for that 'quality losses' or defects which the machine may produce. Of course, many of these losses must be small or non-existent in a well-managed operation. Finite loading is definitely an approach which only allocates work to a work up to and including set limit. This limit will be the estimate of capacity to the work centre (based on the times designed for loading). Infinite loading is surely an method of loading work which does not limit accepting work, but rather tries to cope with it.